The "<type>Coeffs" sub-dictionary is now optional for most model parameters

except turbulence and lagrangian which will also be updated shortly.

For example in the nonNewtonianIcoFoam offsetCylinder tutorial the viscosity
model coefficients may be specified in the corresponding "<type>Coeffs"
sub-dictionary:

transportModel  CrossPowerLaw;

CrossPowerLawCoeffs
{
    nu0         [0 2 -1 0 0 0 0]  0.01;
    nuInf       [0 2 -1 0 0 0 0]  10;
    m           [0 0 1 0 0 0 0]   0.4;
    n           [0 0 0 0 0 0 0]   3;
}

BirdCarreauCoeffs
{
    nu0         [0 2 -1 0 0 0 0]  1e-06;
    nuInf       [0 2 -1 0 0 0 0]  1e-06;
    k           [0 0 1 0 0 0 0]   0;
    n           [0 0 0 0 0 0 0]   1;
}

which allows a quick change between models, or using the simpler

transportModel  CrossPowerLaw;

nu0         [0 2 -1 0 0 0 0]  0.01;
nuInf       [0 2 -1 0 0 0 0]  10;
m           [0 0 1 0 0 0 0]   0.4;
n           [0 0 0 0 0 0 0]   3;

if quick switching between models is not required.

To support this more convenient parameter specification the inconsistent
specification of seedSampleSet in the streamLine and wallBoundedStreamLine
functionObjects had to be corrected from

    // Seeding method.
    seedSampleSet   uniform;  //cloud; //triSurfaceMeshPointSet;

    uniformCoeffs
    {
        type        uniform;
        axis        x;  //distance;

        // Note: tracks slightly offset so as not to be on a face
        start       (-1.001 -0.05 0.0011);
        end         (-1.001 -0.05 1.0011);
        nPoints     20;
    }

to the simpler

    // Seeding method.
    seedSampleSet
    {
        type        uniform;
        axis        x;  //distance;

        // Note: tracks slightly offset so as not to be on a face
        start       (-1.001 -0.05 0.0011);
        end         (-1.001 -0.05 1.0011);
        nPoints     20;
    }

which also support the "<type>Coeffs" form

    // Seeding method.
    seedSampleSet
    {
        type        uniform;

        uniformCoeffs
        {
            axis        x;  //distance;

            // Note: tracks slightly offset so as not to be on a face
            start       (-1.001 -0.05 0.0011);
            end         (-1.001 -0.05 1.0011);
            nPoints     20;
        }
    }

applications/solvers/combustion/PDRFoam/PDRModels/dragModels/PDRDragModel/PDRDragModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -79,7 +79,7 @@ Foam::PDRDragModel::~PDRDragModel()
 
 bool Foam::PDRDragModel::read(const dictionary& PDRProperties)
 {
-    PDRDragModelCoeffs_ = PDRProperties.subDict(type() + "Coeffs");
+    PDRDragModelCoeffs_ = PDRProperties.optionalSubDict(type() + "Coeffs");
 
     PDRDragModelCoeffs_.lookup("drag") >> on_;
 

applications/solvers/combustion/PDRFoam/XiModels/XiEqModels/XiEqModel/XiEqModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -67,7 +67,7 @@ Foam::XiEqModel::~XiEqModel()
 
 bool Foam::XiEqModel::read(const dictionary& XiEqProperties)
 {
-    XiEqModelCoeffs_ = XiEqProperties.subDict(type() + "Coeffs");
+    XiEqModelCoeffs_ = XiEqProperties.optionalSubDict(type() + "Coeffs");
 
     return true;
 }

applications/solvers/combustion/PDRFoam/XiModels/XiGModels/XiGModel/XiGModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -67,7 +67,7 @@ Foam::XiGModel::~XiGModel()
 
 bool Foam::XiGModel::read(const dictionary& XiGProperties)
 {
-    XiGModelCoeffs_ = XiGProperties.subDict(type() + "Coeffs");
+    XiGModelCoeffs_ = XiGProperties.optionalSubDict(type() + "Coeffs");
 
     return true;
 }

applications/solvers/combustion/PDRFoam/XiModels/XiModel/XiModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -85,7 +85,7 @@ Foam::XiModel::~XiModel()
 
 bool Foam::XiModel::read(const dictionary& XiProperties)
 {
-    XiModelCoeffs_ = XiProperties.subDict(type() + "Coeffs");
+    XiModelCoeffs_ = XiProperties.optionalSubDict(type() + "Coeffs");
 
     return true;
 }

applications/solvers/combustion/PDRFoam/laminarFlameSpeed/SCOPE/SCOPELaminarFlameSpeed.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -80,7 +80,7 @@ Foam::laminarFlameSpeedModels::SCOPE::SCOPE
                   dict.lookup("fuelFile")
               )
           )()
-        ).subDict(typeName + "Coeffs")
+        ).optionalSubDict(typeName + "Coeffs")
     ),
     LFL_(readScalar(coeffsDict_.lookup("lowerFlamabilityLimit"))),
     UFL_(readScalar(coeffsDict_.lookup("upperFlamabilityLimit"))),

applications/solvers/multiphase/driftFluxFoam/mixtureViscosityModels/plastic/plastic.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2014 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2014-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,7 @@ Foam::mixtureViscosityModels::plastic::plastic
 )
 :
     mixtureViscosityModel(name, viscosityProperties, U, phi),
-    plasticCoeffs_(viscosityProperties.subDict(modelName + "Coeffs")),
+    plasticCoeffs_(viscosityProperties.optionalSubDict(modelName + "Coeffs")),
     plasticViscosityCoeff_
     (
         "coeff",
@@ -117,7 +117,7 @@ bool Foam::mixtureViscosityModels::plastic::read
 {
     mixtureViscosityModel::read(viscosityProperties);
 
-    plasticCoeffs_ = viscosityProperties.subDict(typeName + "Coeffs");
+    plasticCoeffs_ = viscosityProperties.optionalSubDict(typeName + "Coeffs");
 
     plasticCoeffs_.lookup("k") >> plasticViscosityCoeff_;
     plasticCoeffs_.lookup("n") >> plasticViscosityExponent_;

applications/solvers/multiphase/driftFluxFoam/relativeVelocityModels/relativeVelocityModel/relativeVelocityModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2014-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2014-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -126,7 +126,7 @@ Foam::autoPtr<Foam::relativeVelocityModel> Foam::relativeVelocityModel::New
         (
             cstrIter()
             (
-                dict.subDict(modelType + "Coeffs"),
+                dict.optionalSubDict(modelType + "Coeffs"),
                 mixture
             )
         );

applications/solvers/multiphase/interPhaseChangeFoam/phaseChangeTwoPhaseMixtures/Kunz/Kunz.C

@@ -102,7 +102,7 @@ bool Foam::phaseChangeTwoPhaseMixtures::Kunz::read()
 {
     if (phaseChangeTwoPhaseMixture::read())
     {
-        phaseChangeTwoPhaseMixtureCoeffs_ = subDict(type() + "Coeffs");
+        phaseChangeTwoPhaseMixtureCoeffs_ = optionalSubDict(type() + "Coeffs");
 
         phaseChangeTwoPhaseMixtureCoeffs_.lookup("UInf") >> UInf_;
         phaseChangeTwoPhaseMixtureCoeffs_.lookup("tInf") >> tInf_;

applications/solvers/multiphase/interPhaseChangeFoam/phaseChangeTwoPhaseMixtures/Merkle/Merkle.C

@@ -97,7 +97,7 @@ bool Foam::phaseChangeTwoPhaseMixtures::Merkle::read()
 {
     if (phaseChangeTwoPhaseMixture::read())
     {
-        phaseChangeTwoPhaseMixtureCoeffs_ = subDict(type() + "Coeffs");
+        phaseChangeTwoPhaseMixtureCoeffs_ = optionalSubDict(type() + "Coeffs");
 
         phaseChangeTwoPhaseMixtureCoeffs_.lookup("UInf") >> UInf_;
         phaseChangeTwoPhaseMixtureCoeffs_.lookup("tInf") >> tInf_;

applications/solvers/multiphase/interPhaseChangeFoam/phaseChangeTwoPhaseMixtures/SchnerrSauer/SchnerrSauer.C

@@ -151,7 +151,7 @@ bool Foam::phaseChangeTwoPhaseMixtures::SchnerrSauer::read()
 {
     if (phaseChangeTwoPhaseMixture::read())
     {
-        phaseChangeTwoPhaseMixtureCoeffs_ = subDict(type() + "Coeffs");
+        phaseChangeTwoPhaseMixtureCoeffs_ = optionalSubDict(type() + "Coeffs");
 
         phaseChangeTwoPhaseMixtureCoeffs_.lookup("n") >> n_;
         phaseChangeTwoPhaseMixtureCoeffs_.lookup("dNuc") >> dNuc_;

applications/solvers/multiphase/interPhaseChangeFoam/phaseChangeTwoPhaseMixtures/phaseChangeTwoPhaseMixture/phaseChangeTwoPhaseMixture.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -43,7 +43,7 @@ Foam::phaseChangeTwoPhaseMixture::phaseChangeTwoPhaseMixture
 )
 :
     incompressibleTwoPhaseMixture(U, phi),
-    phaseChangeTwoPhaseMixtureCoeffs_(subDict(type + "Coeffs")),
+    phaseChangeTwoPhaseMixtureCoeffs_(optionalSubDict(type + "Coeffs")),
     pSat_("pSat", dimPressure, lookup("pSat"))
 {}
 
@@ -77,7 +77,7 @@ bool Foam::phaseChangeTwoPhaseMixture::read()
 {
     if (incompressibleTwoPhaseMixture::read())
     {
-        phaseChangeTwoPhaseMixtureCoeffs_ = subDict(type() + "Coeffs");
+        phaseChangeTwoPhaseMixtureCoeffs_ = optionalSubDict(type() + "Coeffs");
         lookup("pSat") >> pSat_;
 
         return true;

applications/solvers/multiphase/multiphaseEulerFoam/multiphaseSystem/diameterModels/diameterModel/newDiameterModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,11 @@ Foam::autoPtr<Foam::diameterModel> Foam::diameterModel::New
            << exit(FatalError);
     }
 
-    return cstrIter()(dict.subDict(diameterModelType + "Coeffs"), phase);
+    return cstrIter()
+    (
+        dict.optionalSubDict(diameterModelType + "Coeffs"),
+        phase
+    );
 }
 
 

applications/solvers/multiphase/reactingEulerFoam/phaseSystems/diameterModels/diameterModel/diameterModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -61,7 +61,7 @@ void Foam::diameterModel::correct()
 
 bool Foam::diameterModel::read(const dictionary& phaseProperties)
 {
-    diameterProperties_ = phaseProperties.subDict(type() + "Coeffs");
+    diameterProperties_ = phaseProperties.optionalSubDict(type() + "Coeffs");
 
     return true;
 }

applications/solvers/multiphase/reactingEulerFoam/phaseSystems/diameterModels/diameterModel/newDiameterModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,11 @@ Foam::autoPtr<Foam::diameterModel> Foam::diameterModel::New
            << exit(FatalError);
     }
 
-    return cstrIter()(dict.subDict(diameterModelType + "Coeffs"), phase);
+    return cstrIter()
+    (
+        dict.optionalSubDict(diameterModelType + "Coeffs"),
+        phase
+    );
 }
 
 

applications/solvers/multiphase/reactingEulerFoam/reactingTwoPhaseEulerFoam/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/conductivityModel/HrenyaSinclair/HrenyaSinclairConductivity.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,7 @@ Foam::kineticTheoryModels::conductivityModels::HrenyaSinclair::HrenyaSinclair
 )
 :
     conductivityModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     L_("L", dimensionSet(0, 1, 0, 0, 0), coeffDict_)
 {}
 
@@ -103,7 +103,7 @@ Foam::kineticTheoryModels::conductivityModels::HrenyaSinclair::kappa
 
 bool Foam::kineticTheoryModels::conductivityModels::HrenyaSinclair::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     L_.readIfPresent(coeffDict_);
 

applications/solvers/multiphase/reactingEulerFoam/reactingTwoPhaseEulerFoam/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/JohnsonJackson/JohnsonJacksonFrictionalStress.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -57,7 +57,7 @@ JohnsonJackson
 )
 :
     frictionalStressModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     Fr_("Fr", dimensionSet(1, -1, -2, 0, 0), coeffDict_),
     eta_("eta", dimless, coeffDict_),
     p_("p", dimless, coeffDict_),
@@ -130,7 +130,7 @@ Foam::kineticTheoryModels::frictionalStressModels::JohnsonJackson::nu
 
 bool Foam::kineticTheoryModels::frictionalStressModels::JohnsonJackson::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     Fr_.read(coeffDict_);
     eta_.read(coeffDict_);

applications/solvers/multiphase/reactingEulerFoam/reactingTwoPhaseEulerFoam/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/JohnsonJacksonSchaeffer/JohnsonJacksonSchaefferFrictionalStress.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2016-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -57,7 +57,7 @@ JohnsonJacksonSchaeffer::JohnsonJacksonSchaeffer
 )
 :
     frictionalStressModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     Fr_("Fr", dimensionSet(1, -1, -2, 0, 0), coeffDict_),
     eta_("eta", dimless, coeffDict_),
     p_("p", dimless, coeffDict_),
@@ -190,7 +190,7 @@ JohnsonJacksonSchaeffer::nu
 bool Foam::kineticTheoryModels::frictionalStressModels::
 JohnsonJacksonSchaeffer::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     Fr_.read(coeffDict_);
     eta_.read(coeffDict_);

applications/solvers/multiphase/reactingEulerFoam/reactingTwoPhaseEulerFoam/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -55,7 +55,7 @@ Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::Schaeffer
 )
 :
     frictionalStressModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     phi_("phi", dimless, coeffDict_)
 {
     phi_ *= constant::mathematical::pi/180.0;
@@ -178,7 +178,7 @@ Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::nu
 
 bool Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     phi_.read(coeffDict_);
     phi_ *= constant::mathematical::pi/180.0;

applications/solvers/multiphase/reactingEulerFoam/reactingTwoPhaseEulerFoam/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/viscosityModel/HrenyaSinclair/HrenyaSinclairViscosity.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,7 @@ Foam::kineticTheoryModels::viscosityModels::HrenyaSinclair::HrenyaSinclair
 )
 :
     viscosityModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     L_("L", dimensionSet(0, 1, 0, 0, 0), coeffDict_)
 {}
 
@@ -100,7 +100,7 @@ Foam::kineticTheoryModels::viscosityModels::HrenyaSinclair::nu
 
 bool Foam::kineticTheoryModels::viscosityModels::HrenyaSinclair::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     L_.readIfPresent(coeffDict_);
 

applications/solvers/multiphase/twoPhaseEulerFoam/phaseCompressibleTurbulenceModels/kineticTheoryModels/conductivityModel/HrenyaSinclair/HrenyaSinclairConductivity.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,7 @@ Foam::kineticTheoryModels::conductivityModels::HrenyaSinclair::HrenyaSinclair
 )
 :
     conductivityModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     L_("L", dimensionSet(0, 1, 0, 0, 0), coeffDict_)
 {}
 
@@ -103,7 +103,7 @@ Foam::kineticTheoryModels::conductivityModels::HrenyaSinclair::kappa
 
 bool Foam::kineticTheoryModels::conductivityModels::HrenyaSinclair::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     L_.readIfPresent(coeffDict_);
 

applications/solvers/multiphase/twoPhaseEulerFoam/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/JohnsonJackson/JohnsonJacksonFrictionalStress.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -57,7 +57,7 @@ JohnsonJackson
 )
 :
     frictionalStressModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     Fr_("Fr", dimensionSet(1, -1, -2, 0, 0), coeffDict_),
     eta_("eta", dimless, coeffDict_),
     p_("p", dimless, coeffDict_),
@@ -130,7 +130,7 @@ Foam::kineticTheoryModels::frictionalStressModels::JohnsonJackson::nu
 
 bool Foam::kineticTheoryModels::frictionalStressModels::JohnsonJackson::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     Fr_.read(coeffDict_);
     eta_.read(coeffDict_);

applications/solvers/multiphase/twoPhaseEulerFoam/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/JohnsonJacksonSchaeffer/JohnsonJacksonSchaefferFrictionalStress.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2016-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -57,7 +57,7 @@ JohnsonJacksonSchaeffer::JohnsonJacksonSchaeffer
 )
 :
     frictionalStressModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     Fr_("Fr", dimensionSet(1, -1, -2, 0, 0), coeffDict_),
     eta_("eta", dimless, coeffDict_),
     p_("p", dimless, coeffDict_),
@@ -190,7 +190,7 @@ JohnsonJacksonSchaeffer::nu
 bool Foam::kineticTheoryModels::frictionalStressModels::
 JohnsonJacksonSchaeffer::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     Fr_.read(coeffDict_);
     eta_.read(coeffDict_);

applications/solvers/multiphase/twoPhaseEulerFoam/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -55,7 +55,7 @@ Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::Schaeffer
 )
 :
     frictionalStressModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     phi_("phi", dimless, coeffDict_)
 {
     phi_ *= constant::mathematical::pi/180.0;
@@ -178,7 +178,7 @@ Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::nu
 
 bool Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     phi_.read(coeffDict_);
     phi_ *= constant::mathematical::pi/180.0;

applications/solvers/multiphase/twoPhaseEulerFoam/phaseCompressibleTurbulenceModels/kineticTheoryModels/viscosityModel/HrenyaSinclair/HrenyaSinclairViscosity.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,7 @@ Foam::kineticTheoryModels::viscosityModels::HrenyaSinclair::HrenyaSinclair
 )
 :
     viscosityModel(dict),
-    coeffDict_(dict.subDict(typeName + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(typeName + "Coeffs")),
     L_("L", dimensionSet(0, 1, 0, 0, 0), coeffDict_)
 {}
 
@@ -100,7 +100,7 @@ Foam::kineticTheoryModels::viscosityModels::HrenyaSinclair::nu
 
 bool Foam::kineticTheoryModels::viscosityModels::HrenyaSinclair::read()
 {
-    coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
+    coeffDict_ <<= dict_.optionalSubDict(typeName + "Coeffs");
 
     L_.readIfPresent(coeffDict_);
 

applications/solvers/multiphase/twoPhaseEulerFoam/twoPhaseSystem/diameterModels/diameterModel/diameterModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -61,7 +61,7 @@ void Foam::diameterModel::correct()
 
 bool Foam::diameterModel::read(const dictionary& phaseProperties)
 {
-    diameterProperties_ = phaseProperties.subDict(type() + "Coeffs");
+    diameterProperties_ = phaseProperties.optionalSubDict(type() + "Coeffs");
 
     return true;
 }

applications/solvers/multiphase/twoPhaseEulerFoam/twoPhaseSystem/diameterModels/diameterModel/newDiameterModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,11 @@ Foam::autoPtr<Foam::diameterModel> Foam::diameterModel::New
            << exit(FatalError);
     }
 
-    return cstrIter()(dict.subDict(diameterModelType + "Coeffs"), phase);
+    return cstrIter()
+    (
+        dict.optionalSubDict(diameterModelType + "Coeffs"),
+        phase
+    );
 }
 
 

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/cellSizeFunction/cellSizeFunction.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -58,7 +58,7 @@ Foam::cellSizeFunction::cellSizeFunction
             defaultCellSize
         )
     ),
-    coeffsDict_(subDict(type + "Coeffs")),
+    coeffsDict_(optionalSubDict(type + "Coeffs")),
     defaultCellSize_(defaultCellSize),
     regionIndices_(regionIndices),
     sideMode_(),

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellSizeControlSurfaces/surfaceCellSizeFunction/cellSizeCalculationType/automatic/automatic.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -107,7 +107,7 @@ Foam::automatic::automatic
         surface,
         defaultCellSize
     ),
-    coeffsDict_(cellSizeCalcTypeDict.subDict(typeName + "Coeffs")),
+    coeffsDict_(cellSizeCalcTypeDict.optionalSubDict(typeName + "Coeffs")),
     surfaceName_(surface.searchableSurface::name()),
     readCurvature_(Switch(coeffsDict_.lookup("curvature"))),
     curvatureFile_(coeffsDict_.lookup("curvatureFile")),

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellSizeControlSurfaces/surfaceCellSizeFunction/cellSizeCalculationType/fieldFromFile/fieldFromFile.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -58,10 +58,13 @@ Foam::fieldFromFile::fieldFromFile
         surface,
         defaultCellSize
     ),
-    coeffsDict_(cellSizeCalcTypeDict.subDict(typeName + "Coeffs")),
+    coeffsDict_(cellSizeCalcTypeDict.optionalSubDict(typeName + "Coeffs")),
     fileName_
     (
-        cellSizeCalcTypeDict.subDict(typeName + "Coeffs").lookup("fieldFile")
+        cellSizeCalcTypeDict.optionalSubDict
+        (
+            typeName + "Coeffs"
+        ).lookup("fieldFile")
     ),
     cellSizeMultipleCoeff_
     (

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellSizeControlSurfaces/surfaceCellSizeFunction/surfaceCellSizeFunction/surfaceCellSizeFunction.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -46,7 +46,7 @@ Foam::surfaceCellSizeFunction::surfaceCellSizeFunction
 :
     dictionary(surfaceCellSizeFunctionDict),
     surface_(surface),
-    coeffsDict_(subDict(type + "Coeffs")),
+    coeffsDict_(optionalSubDict(type + "Coeffs")),
     defaultCellSize_(defaultCellSize),
     refinementFactor_
     (

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/faceAreaWeightModel/faceAreaWeightModel/faceAreaWeightModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -46,7 +46,7 @@ faceAreaWeightModel::faceAreaWeightModel
 )
 :
     dictionary(relaxationDict),
-    coeffDict_(subDict(type + "Coeffs"))
+    coeffDict_(optionalSubDict(type + "Coeffs"))
 {}
 
 

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/initialPointsMethod/initialPointsMethod/initialPointsMethod.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,7 @@ initialPointsMethod::initialPointsMethod
     geometryToConformTo_(geometryToConformTo),
     cellShapeControls_(cellShapeControls),
     decomposition_(decomposition),
-    detailsDict_(subDict(type + "Coeffs")),
+    detailsDict_(optionalSubDict(type + "Coeffs")),
     minimumSurfaceDistanceCoeffSqr_
     (
         sqr

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/relaxationModel/relaxationModel/relaxationModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -48,7 +48,7 @@ relaxationModel::relaxationModel
 :
     dictionary(relaxationDict),
     runTime_(runTime),
-    coeffDict_(subDict(type + "Coeffs"))
+    coeffDict_(optionalSubDict(type + "Coeffs"))
 {}
 
 

applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C

@@ -138,7 +138,7 @@ autoPtr<refinementSurfaces> createRefinementSurfaces
             const word scsFuncName =
                 shapeDict.lookup("surfaceCellSizeFunction");
             const dictionary& scsDict =
-                shapeDict.subDict(scsFuncName + "Coeffs");
+                shapeDict.optionalSubDict(scsFuncName + "Coeffs");
 
             const scalar surfaceCellSize =
                 readScalar(scsDict.lookup("surfaceCellSizeCoeff"));

applications/utilities/preProcessing/wallFunctionTable/tabulatedWallFunction/tabulatedWallFunction/tabulatedWallFunction.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -49,7 +49,7 @@ Foam::tabulatedWallFunctions::tabulatedWallFunction::tabulatedWallFunction
 :
     dict_(dict),
     mesh_(mesh),
-    coeffDict_(dict.subDict(name + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(name + "Coeffs")),
     invertedTableName_(dict.lookup("invertedTableName")),
     invertedTable_(invertedTableName_, mesh_, dict, true)
 {}

etc/caseDicts/postProcessing/visualization/streamlines.cfg

@@ -19,8 +19,8 @@ lifeTime        10000;
 nSubCycle       5;
 
 cloudName       particleTracks;
-seedSampleSet   uniform;
+
-uniformCoeffs
+seedSampleSet
 {
     type            uniform;
     axis            x;

src/OpenFOAM/db/dictionary/dictionary.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -755,6 +755,24 @@ Foam::dictionary Foam::dictionary::subOrEmptyDict
 }
 
 
+const Foam::dictionary& Foam::dictionary::optionalSubDict
+(
+    const word& keyword
+) const
+{
+    const entry* entryPtr = lookupEntryPtr(keyword, false, true);
+
+    if (entryPtr)
+    {
+        return entryPtr->dict();
+    }
+    else
+    {
+        return *this;
+    }
+}
+
+
 Foam::wordList Foam::dictionary::toc() const
 {
     wordList keys(size());

src/OpenFOAM/db/dictionary/dictionary.H

@@ -419,6 +419,10 @@ public:
                 const bool mustRead = false
             ) const;
 
+            //- Find and return a sub-dictionary if found
+            //  otherwise return this dictionary
+            const dictionary& optionalSubDict(const word&) const;
+
             //- Return the table of contents
             wordList toc() const;
 

src/combustionModels/FSD/reactionRateFlameAreaModels/reactionRateFlameArea/reactionRateFlameArea.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -44,7 +44,7 @@ Foam::reactionRateFlameArea::reactionRateFlameArea
     const combustionModel& combModel
 )
 :
-    coeffDict_(dict.subDict(modelType + "Coeffs")),
+    coeffDict_(dict.optionalSubDict(modelType + "Coeffs")),
     mesh_(mesh),
     combModel_(combModel),
     fuel_(dict.lookup("fuel")),

src/combustionModels/FSD/reactionRateFlameAreaModels/relaxation/relaxation.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,9 +56,12 @@ Foam::reactionRateFlameAreaModels::relaxation::relaxation
 )
 :
     reactionRateFlameArea(modelType, dict, mesh, combModel),
-    correlation_(dict.subDict(typeName + "Coeffs").subDict(fuel_)),
+    correlation_(dict.optionalSubDict(typeName + "Coeffs").subDict(fuel_)),
-    C_(readScalar(dict.subDict(typeName + "Coeffs").lookup("C"))),
+    C_(readScalar(dict.optionalSubDict(typeName + "Coeffs").lookup("C"))),
-    alpha_(readScalar(dict.subDict(typeName + "Coeffs").lookup("alpha")))
+    alpha_
+    (
+        readScalar(dict.optionalSubDict(typeName + "Coeffs").lookup("alpha"))
+    )
 {}
 
 
@@ -148,7 +151,7 @@ bool  Foam::reactionRateFlameAreaModels::relaxation::read
 {
     if (reactionRateFlameArea::read(dict))
     {
-        coeffDict_ = dict.subDict(typeName + "Coeffs");
+        coeffDict_ = dict.optionalSubDict(typeName + "Coeffs");
         coeffDict_.lookup("C") >> C_;
         coeffDict_.lookup("alpha") >> alpha_;
         correlation_.read

src/combustionModels/combustionModel/combustionModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -62,7 +62,7 @@ Foam::combustionModel::combustionModel
     turbulencePtr_(),
     mesh_(mesh),
     active_(lookupOrDefault<Switch>("active", true)),
-    coeffs_(subDict(modelType + "Coeffs")),
+    coeffs_(optionalSubDict(modelType + "Coeffs")),
     modelType_(modelType),
     phaseName_(phaseName)
 {}
@@ -86,7 +86,7 @@ bool Foam::combustionModel::read()
     if (regIOobject::read())
     {
         this->lookup("active") >> active_;
-        coeffs_ = subDict(modelType_ + "Coeffs");
+        coeffs_ = optionalSubDict(modelType_ + "Coeffs");
         return true;
     }
     else

src/dynamicFvMesh/dynamicInkJetFvMesh/dynamicInkJetFvMesh.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -55,7 +55,7 @@ Foam::dynamicInkJetFvMesh::dynamicInkJetFvMesh(const IOobject& io)
                 IOobject::NO_WRITE,
                 false
             )
-        ).subDict(typeName + "Coeffs")
+        ).optionalSubDict(typeName + "Coeffs")
     ),
     amplitude_(readScalar(dynamicMeshCoeffs_.lookup("amplitude"))),
     frequency_(readScalar(dynamicMeshCoeffs_.lookup("frequency"))),

src/dynamicFvMesh/dynamicRefineFvMesh/dynamicRefineFvMesh.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -191,7 +191,7 @@ void Foam::dynamicRefineFvMesh::readDict()
                 IOobject::NO_WRITE,
                 false
             )
-        ).subDict(typeName + "Coeffs")
+        ).optionalSubDict(typeName + "Coeffs")
     );
 
     List<Pair<word>> fluxVelocities = List<Pair<word>>
@@ -1202,7 +1202,7 @@ bool Foam::dynamicRefineFvMesh::update()
                 IOobject::NO_WRITE,
                 false
             )
-        ).subDict(typeName + "Coeffs")
+        ).optionalSubDict(typeName + "Coeffs")
     );
 
     label refineInterval = readLabel(refineDict.lookup("refineInterval"));

src/dynamicMesh/motionSolvers/displacement/solidBody/solidBodyMotionFunctions/solidBodyMotionFunction/solidBodyMotionFunction.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -44,7 +44,7 @@ Foam::solidBodyMotionFunction::solidBodyMotionFunction
 :
     SBMFCoeffs_
     (
-        SBMFCoeffs.subDict
+        SBMFCoeffs.optionalSubDict
         (
             word(SBMFCoeffs.lookup("solidBodyMotionFunction")) + "Coeffs"
         )
@@ -63,7 +63,7 @@ Foam::solidBodyMotionFunction::~solidBodyMotionFunction()
 
 bool Foam::solidBodyMotionFunction::read(const dictionary& SBMFCoeffs)
 {
-    SBMFCoeffs_ = SBMFCoeffs.subDict(type() + "Coeffs");
+    SBMFCoeffs_ = SBMFCoeffs.optionalSubDict(type() + "Coeffs");
 
     return true;
 }

src/dynamicMesh/motionSolvers/motionSolver/motionSolver.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -85,7 +85,7 @@ Foam::motionSolver::motionSolver
 :
     IOdictionary(stealRegistration(dict), dict),
     mesh_(mesh),
-    coeffDict_(dict.subDict(type + "Coeffs"))
+    coeffDict_(dict.optionalSubDict(type + "Coeffs"))
 {}
 
 
@@ -104,7 +104,7 @@ Foam::autoPtr<Foam::motionSolver> Foam::motionSolver::New
     const IOdictionary& solverDict
 )
 {
-    const word solverTypeName(solverDict.lookup("solver"));
+    const word solverTypeName(solverDict.lookup("motionSolver"));
 
     Info<< "Selecting motion solver: " << solverTypeName << endl;
 
@@ -227,7 +227,7 @@ bool Foam::motionSolver::read()
 {
     if (regIOobject::read())
     {
-        coeffDict_ = subDict(type() + "Coeffs");
+        coeffDict_ = optionalSubDict(type() + "Coeffs");
 
         return true;
     }

src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -61,7 +61,7 @@ Foam::SRF::SRFModel::SRFModel
     mesh_(Urel_.mesh()),
     origin_("origin", dimLength, lookup("origin")),
     axis_(lookup("axis")),
-    SRFModelCoeffs_(subDict(type + "Coeffs")),
+    SRFModelCoeffs_(optionalSubDict(type + "Coeffs")),
     omega_(dimensionedVector("omega", dimless/dimTime, Zero))
 {
     // Normalise the axis
@@ -89,7 +89,7 @@ bool Foam::SRF::SRFModel::read()
         axis_ /= mag(axis_);
 
         // Re-read sub-model coeffs
-        SRFModelCoeffs_ = subDict(type() + "Coeffs");
+        SRFModelCoeffs_ = optionalSubDict(type() + "Coeffs");
 
         return true;
     }

src/finiteVolume/cfdTools/general/fvOptions/fvOption.C

@@ -52,12 +52,7 @@ Foam::fv::option::option
     modelType_(modelType),
     mesh_(mesh),
     dict_(dict),
-    coeffs_
+    coeffs_(dict.optionalSubDict(modelType + "Coeffs")),
-    (
-        dict.found(modelType + "Coeffs")
-      ? dict.subDict(modelType + "Coeffs")
-      : dict
-    ),
     active_(dict_.lookupOrDefault<Switch>("active", true)),
     fieldNames_(),
     applied_()

src/finiteVolume/cfdTools/general/fvOptions/fvOptionIO.C

@@ -54,14 +54,7 @@ bool Foam::fv::option::read(const dictionary& dict)
 {
     dict.readIfPresent("active", active_);
 
-    if (dict.found(modelType_ + "Coeffs"))
+    coeffs_ = dict.optionalSubDict(modelType_ + "Coeffs");
-    {
-        coeffs_ = dict.subDict(modelType_ + "Coeffs");
-    }
-    else
-    {
-        coeffs_ = dict;
-    }
 
     return true;
 }

src/finiteVolume/cfdTools/general/porosityModel/porosityModel/porosityModel.C

@@ -97,12 +97,7 @@ Foam::porosityModel::porosityModel
     name_(name),
     mesh_(mesh),
     dict_(dict),
-    coeffs_
+    coeffs_(dict.optionalSubDict(modelType + "Coeffs")),
-    (
-        dict.found(modelType + "Coeffs")
-      ? dict.subDict(modelType + "Coeffs")
-      : dict
-    ),
     active_(true),
     zoneName_(cellZoneName),
     cellZoneIDs_(),
@@ -234,14 +229,7 @@ bool Foam::porosityModel::read(const dictionary& dict)
 {
     dict.readIfPresent("active", active_);
 
-    if (dict.found(type() + "Coeffs"))
+    coeffs_ = dict.optionalSubDict(type() + "Coeffs");
-    {
-        coeffs_ = dict.subDict(type() + "Coeffs");
-    }
-    else
-    {
-        coeffs_ = dict;
-    }
 
     dict.lookup("cellZone") >> zoneName_;
     cellZoneIDs_ = mesh_.cellZones().findIndices(zoneName_);

src/finiteVolume/fvMesh/wallDist/patchDistMethods/advectionDiffusion/advectionDiffusionPatchDistMethod.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2015-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2015-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,7 @@ Foam::patchDistMethods::advectionDiffusion::advectionDiffusion
 )
 :
     patchDistMethod(mesh, patchIDs),
-    coeffs_(dict.subDict(type() + "Coeffs")),
+    coeffs_(dict.optionalSubDict(type() + "Coeffs")),
     pdmPredictor_
     (
         patchDistMethod::New

src/functionObjects/field/streamLine/streamLine.C

@@ -372,19 +372,17 @@ bool Foam::functionObjects::streamLine::read(const dictionary& dict)
     );
 
     cloudName_ = dict.lookupOrDefault<word>("cloudName", "streamLine");
-    dict.lookup("seedSampleSet") >> seedSet_;
 
     meshSearchPtr_.reset(new meshSearch(mesh_));
 
-    const dictionary& coeffsDict = dict.subDict(seedSet_ + "Coeffs");
     sampledSetPtr_ = sampledSet::New
     (
-        seedSet_,
+        "seedSampleSet",
         mesh_,
         meshSearchPtr_(),
-        coeffsDict
+        dict.subDict("seedSampleSet")
     );
-    coeffsDict.lookup("axis") >> sampledSetAxis_;
+    sampledSetAxis_ = sampledSetPtr_->axis();
 
     scalarFormatterPtr_ = writer<scalar>::New(dict.lookup("setFormat"));
     vectorFormatterPtr_ = writer<vector>::New(dict.lookup("setFormat"));

src/functionObjects/field/streamLine/streamLine.H

@@ -55,8 +55,7 @@ Description
         nSubCycle       5;
         cloudName       particleTracks;
 
-        seedSampleSet   uniform;
+        seedSampleSet
-        uniformCoeffs
         {
             type        uniform;
             axis        x;  //distance;
@@ -81,7 +80,7 @@ Usage
         seedSampleSet| Seeding method (see below)| yes       |
     \endtable
 
-    Where \c seedSampleSet is typically one of
+    Where \c seedSampleSet \c type is typically one of
     \plaintable
         uniform | uniform particle seeding
         cloud   | cloud of points

src/functionObjects/field/wallBoundedStreamLine/wallBoundedStreamLine.C

@@ -469,18 +469,15 @@ bool Foam::functionObjects::wallBoundedStreamLine::read(const dictionary& dict)
         "cloudName",
         "wallBoundedStreamLine"
     );
-    dict.lookup("seedSampleSet") >> seedSet_;
-
-    const dictionary& coeffsDict = dict.subDict(seedSet_ + "Coeffs");
 
     sampledSetPtr_ = sampledSet::New
     (
-        seedSet_,
+        "seedSampleSet",
         mesh_,
         meshSearchMeshObject::New(mesh_),
-        coeffsDict
+        dict.subDict("seedSampleSet")
     );
-    coeffsDict.lookup("axis") >> sampledSetAxis_;
+    sampledSetAxis_ = sampledSetPtr_->axis();
 
     scalarFormatterPtr_ = writer<scalar>::New(dict.lookup("setFormat"));
     vectorFormatterPtr_ = writer<vector>::New(dict.lookup("setFormat"));

src/functionObjects/field/wallBoundedStreamLine/wallBoundedStreamLine.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,8 +56,7 @@ Description
         nSubCycle       5;
         cloudName       particleTracks;
 
-        seedSampleSet   patchSeed;
+        seedSampleSet
-        patchSeedCoeffs
         {
             type        patchSeed;
             patches     (wall);
@@ -81,7 +80,7 @@ Usage
         seedSampleSet| Seeding method (see below)| yes       |
     \endtable
 
-    Where \c seedSampleSet is typically one of
+    Where \c seedSampleSet \c type is typically one of
     \plaintable
         uniform   | uniform particle seeding
         cloud     | cloud of points

src/fvMotionSolver/fvMotionSolvers/displacement/SBRStress/displacementSBRStressFvMotionSolver.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -57,7 +57,7 @@ Foam::displacementSBRStressFvMotionSolver::displacementSBRStressFvMotionSolver
     const IOdictionary& dict
 )
 :
-    displacementMotionSolver(mesh, dict, dict.lookup("solver")),
+    displacementMotionSolver(mesh, dict, typeName),
     fvMotionSolver(mesh),
     cellDisplacement_
     (

src/fvOptions/sources/derived/rotorDiskSource/trimModel/trimModel/trimModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -60,7 +60,7 @@ Foam::trimModel::~trimModel()
 
 void Foam::trimModel::read(const dictionary& dict)
 {
-    coeffs_ = dict.subDict(name_ + "Coeffs");
+    coeffs_ = dict.optionalSubDict(name_ + "Coeffs");
 }
 
 

src/mesh/extrudeModel/extrudeModel/extrudeModel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -44,7 +44,7 @@ Foam::extrudeModel::extrudeModel
     nLayers_(dict.lookupOrDefault<label>("nLayers", 1)),
     expansionRatio_(dict.lookupOrDefault<scalar>("expansionRatio", 1)),
     dict_(dict),
-    coeffDict_(dict.subDict(modelType + "Coeffs"))
+    coeffDict_(dict.optionalSubDict(modelType + "Coeffs"))
 {}
 
 

src/mesh/snappyHexMesh/externalDisplacementMeshMover/displacementMeshMoverMotionSolver.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2013-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2013-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -77,7 +77,7 @@ Foam::displacementMeshMoverMotionSolver::meshMover() const
         meshMoverPtr_ = externalDisplacementMeshMover::New
         (
             moverType,
-            coeffDict().subDict(moverType + "Coeffs"),
+            coeffDict().optionalSubDict(moverType + "Coeffs"),
             localPointRegion::findDuplicateFacePairs(mesh()),
             pointDisplacement_
         );
@@ -108,7 +108,7 @@ void Foam::displacementMeshMoverMotionSolver::solve()
     labelList checkFaces(identity(mesh().nFaces()));
     meshMover().move
     (
-        coeffDict().subDict(meshMover().type() + "Coeffs"),
+        coeffDict().optionalSubDict(meshMover().type() + "Coeffs"),
         nAllowableErrors,
         checkFaces
     );

src/parallel/decompose/decompositionMethods/decompositionConstraints/decompositionConstraint/decompositionConstraint.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2015-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2015-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -29,8 +29,8 @@ License
 
 namespace Foam
 {
-defineTypeNameAndDebug(decompositionConstraint, 1);
+    defineTypeNameAndDebug(decompositionConstraint, 1);
-defineRunTimeSelectionTable(decompositionConstraint, dictionary);
+    defineRunTimeSelectionTable(decompositionConstraint, dictionary);
 }
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
@@ -41,7 +41,6 @@ Foam::decompositionConstraint::decompositionConstraint
     const word& type
 )
 :
-    //coeffDict_(constraintsDict.subOrEmptyDict(type + "Coeffs"))
     coeffDict_(constraintsDict)
 {}
 

src/parallel/decompose/decompositionMethods/geomDecomp/geomDecomp.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -34,7 +34,7 @@ Foam::geomDecomp::geomDecomp
 )
 :
     decompositionMethod(decompositionDict),
-    geomDecomDict_(decompositionDict.subDict(derivedType + "Coeffs")),
+    geomDecomDict_(decompositionDict.optionalSubDict(derivedType + "Coeffs")),
     n_(geomDecomDict_.lookup("n")),
     delta_(readScalar(geomDecomDict_.lookup("delta"))),
     rotDelta_(I)

src/parallel/decompose/decompositionMethods/manualDecomp/manualDecomp.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -53,8 +53,10 @@ Foam::manualDecomp::manualDecomp(const dictionary& decompositionDict)
     decompositionMethod(decompositionDict),
     decompDataFile_
     (
-        decompositionDict.subDict(word(decompositionDict.lookup("method"))
+        decompositionDict.optionalSubDict
-      + "Coeffs").lookup("dataFile")
+        (
+            word(decompositionDict.lookup("method")) + "Coeffs"
+        ).lookup("dataFile")
     )
 {}
 

src/parallel/decompose/decompositionMethods/multiLevelDecomp/multiLevelDecomp.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -243,7 +243,7 @@ void Foam::multiLevelDecomp::decompose
 
             // Retrieve original level0 dictionary and modify number of domains
             dictionary::const_iterator iter =
-                decompositionDict_.subDict(typeName + "Coeffs").begin();
+                decompositionDict_.optionalSubDict(typeName + "Coeffs").begin();
             dictionary myDict = iter().dict();
             myDict.set("numberOfSubdomains", nTotal);
 
@@ -330,7 +330,7 @@ void Foam::multiLevelDecomp::decompose
 Foam::multiLevelDecomp::multiLevelDecomp(const dictionary& decompositionDict)
 :
     decompositionMethod(decompositionDict),
-    methodsDict_(decompositionDict_.subDict(typeName + "Coeffs"))
+    methodsDict_(decompositionDict_.optionalSubDict(typeName + "Coeffs"))
 {
     methods_.setSize(methodsDict_.size());
     label i = 0;

src/parallel/decompose/decompositionMethods/structuredDecomp/structuredDecomp.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -49,7 +49,7 @@ namespace Foam
 Foam::structuredDecomp::structuredDecomp(const dictionary& decompositionDict)
 :
     decompositionMethod(decompositionDict),
-    methodDict_(decompositionDict_.subDict(typeName + "Coeffs")),
+    methodDict_(decompositionDict_.optionalSubDict(typeName + "Coeffs")),
     patches_(methodDict_.lookup("patches"))
 {
     methodDict_.set("numberOfSubdomains", nDomains());

src/regionModels/surfaceFilmModels/submodels/kinematic/filmThermoModel/liquidFilmThermo/liquidFilmThermo.C

@@ -94,7 +94,7 @@ void liquidFilmThermo::initLiquid(const dictionary& dict)
         ownLiquid_ = true;
 
         liquidPtr_ =
-            liquidProperties::New(dict.subDict(name_ + "Coeffs")).ptr();
+            liquidProperties::New(dict.optionalSubDict(name_ + "Coeffs")).ptr();
     }
 }
 

src/renumber/SloanRenumber/SloanRenumber.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -92,9 +92,10 @@ Foam::SloanRenumber::SloanRenumber(const dictionary& renumberDict)
     renumberMethod(renumberDict),
     reverse_
     (
-        renumberDict.found(typeName + "Coeffs")
+        renumberDict.optionalSubDict
-      ? Switch(renumberDict.subDict(typeName + "Coeffs").lookup("reverse"))
+        (
-      : Switch(false)
+            typeName + "Coeffs"
+        ).lookupOrDefault<Switch>("reverse", false)
     )
 {}
 

src/renumber/renumberMethods/CuthillMcKeeRenumber/CuthillMcKeeRenumber.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -50,9 +50,10 @@ Foam::CuthillMcKeeRenumber::CuthillMcKeeRenumber(const dictionary& renumberDict)
     renumberMethod(renumberDict),
     reverse_
     (
-        renumberDict.found(typeName + "Coeffs")
+        renumberDict.optionalSubDict
-      ? Switch(renumberDict.subDict(typeName + "Coeffs").lookup("reverse"))
+        (
-      : Switch(false)
+            typeName + "Coeffs"
+        ).lookupOrDefault<Switch>("reverse", false)
     )
 {}
 

src/renumber/renumberMethods/manualRenumber/manualRenumber.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -50,7 +50,7 @@ Foam::manualRenumber::manualRenumber(const dictionary& renumberDict)
     renumberMethod(renumberDict),
     dataFile_
     (
-        renumberDict.subDict(typeName+"Coeffs").lookup("dataFile")
+        renumberDict.optionalSubDict(typeName+"Coeffs").lookup("dataFile")
     )
 {}
 

src/renumber/renumberMethods/springRenumber/springRenumber.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -47,7 +47,7 @@ namespace Foam
 Foam::springRenumber::springRenumber(const dictionary& renumberDict)
 :
     renumberMethod(renumberDict),
-    dict_(renumberDict.subDict(typeName+"Coeffs")),
+    dict_(renumberDict.optionalSubDict(typeName+"Coeffs")),
     maxCo_(readScalar(dict_.lookup("maxCo"))),
     maxIter_(readLabel(dict_.lookup("maxIter"))),
     freezeFraction_(readScalar(dict_.lookup("freezeFraction")))

src/renumber/renumberMethods/structuredRenumber/structuredRenumber.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -52,7 +52,7 @@ Foam::structuredRenumber::structuredRenumber
 )
 :
     renumberMethod(renumberDict),
-    methodDict_(renumberDict.subDict(typeName + "Coeffs")),
+    methodDict_(renumberDict.optionalSubDict(typeName + "Coeffs")),
     patches_(methodDict_.lookup("patches")),
     nLayers_(methodDict_.lookupOrDefault<label>("nLayers", labelMax)),
     depthFirst_(methodDict_.lookup("depthFirst")),

src/renumber/zoltanRenumber/zoltanRenumber.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -261,7 +261,7 @@ static void get_geom_list
 Foam::zoltanRenumber::zoltanRenumber(const dictionary& renumberDict)
 :
     renumberMethod(renumberDict),
-    coeffsDict_(renumberDict.subDict(typeName+"Coeffs"))
+    coeffsDict_(renumberDict.optionalSubDict(typeName+"Coeffs"))
 {}
 
 

src/sampling/sampledSet/sampledSet/sampledSet.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -468,7 +468,7 @@ Foam::autoPtr<Foam::sampledSet> Foam::sampledSet::New
             name,
             mesh,
             searchEngine,
-            dict
+            dict.optionalSubDict(sampleType + "Coeffs")
         )
     );
 }

src/thermophysicalModels/laminarFlameSpeed/Gulders/Gulders.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -54,7 +54,7 @@ Foam::laminarFlameSpeedModels::Gulders::Gulders
 :
     laminarFlameSpeed(dict, ct),
 
-    coeffsDict_(dict.subDict(typeName + "Coeffs").subDict(fuel_)),
+    coeffsDict_(dict.optionalSubDict(typeName + "Coeffs").subDict(fuel_)),
     W_(readScalar(coeffsDict_.lookup("W"))),
     eta_(readScalar(coeffsDict_.lookup("eta"))),
     xi_(readScalar(coeffsDict_.lookup("xi"))),

src/thermophysicalModels/laminarFlameSpeed/GuldersEGR/GuldersEGR.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -53,7 +53,7 @@ Foam::laminarFlameSpeedModels::GuldersEGR::GuldersEGR
 :
     laminarFlameSpeed(dict, ct),
 
-    coeffsDict_(dict.subDict(typeName + "Coeffs").subDict(fuel_)),
+    coeffsDict_(dict.optionalSubDict(typeName + "Coeffs").subDict(fuel_)),
     W_(readScalar(coeffsDict_.lookup("W"))),
     eta_(readScalar(coeffsDict_.lookup("eta"))),
     xi_(readScalar(coeffsDict_.lookup("xi"))),

src/thermophysicalModels/laminarFlameSpeed/RaviPetersen/RaviPetersen.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2013-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2013-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -53,7 +53,7 @@ Foam::laminarFlameSpeedModels::RaviPetersen::RaviPetersen
 )
 :
     laminarFlameSpeed(dict, ct),
-    coeffsDict_(dict.subDict(typeName + "Coeffs").subDict(fuel_)),
+    coeffsDict_(dict.optionalSubDict(typeName + "Coeffs").subDict(fuel_)),
     pPoints_(coeffsDict_.lookup("pPoints")),
     EqRPoints_(coeffsDict_.lookup("EqRPoints")),
     alpha_(coeffsDict_.lookup("alpha")),

src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/binaryAbsorptionEmission/binaryAbsorptionEmission.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -53,7 +53,7 @@ Foam::radiation::binaryAbsorptionEmission::binaryAbsorptionEmission
 )
 :
     absorptionEmissionModel(dict, mesh),
-    coeffsDict_(dict.subDict(typeName + "Coeffs")),
+    coeffsDict_(dict.optionalSubDict(typeName + "Coeffs")),
     model1_
     (
         absorptionEmissionModel::New(coeffsDict_.subDict("model1"), mesh)

src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/constantAbsorptionEmission/constantAbsorptionEmission.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -53,7 +53,7 @@ Foam::radiation::constantAbsorptionEmission::constantAbsorptionEmission
 )
 :
     absorptionEmissionModel(dict, mesh),
-    coeffsDict_(dict.subDict(typeName + "Coeffs")),
+    coeffsDict_(dict.optionalSubDict(typeName + "Coeffs")),
     a_(coeffsDict_.lookup("absorptivity")),
     e_(coeffsDict_.lookup("emissivity")),
     E_(coeffsDict_.lookup("E"))

src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/greyMeanAbsorptionEmission/greyMeanAbsorptionEmission.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,7 @@ Foam::radiation::greyMeanAbsorptionEmission::greyMeanAbsorptionEmission
 )
 :
     absorptionEmissionModel(dict, mesh),
-    coeffsDict_((dict.subDict(typeName + "Coeffs"))),
+    coeffsDict_((dict.optionalSubDict(typeName + "Coeffs"))),
     speciesNames_(0),
     specieIndex_(label(0)),
     lookUpTablePtr_(),
@@ -73,7 +73,7 @@ Foam::radiation::greyMeanAbsorptionEmission::greyMeanAbsorptionEmission
 
 
     label nFunc = 0;
-    const dictionary& functionDicts = dict.subDict(typeName + "Coeffs");
+    const dictionary& functionDicts = dict.optionalSubDict(typeName + "Coeffs");
 
     forAllConstIter(dictionary, functionDicts, iter)
     {

src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/greyMeanSolidAbsorptionEmission/greyMeanSolidAbsorptionEmission.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -90,7 +90,7 @@ greyMeanSolidAbsorptionEmission
 )
 :
     absorptionEmissionModel(dict, mesh),
-    coeffsDict_((dict.subDict(typeName + "Coeffs"))),
+    coeffsDict_((dict.optionalSubDict(typeName + "Coeffs"))),
     thermo_(mesh.lookupObject<solidThermo>(basicThermo::dictName)),
     speciesNames_(0),
     mixture_(dynamic_cast<const basicSpecieMixture&>(thermo_)),
@@ -104,7 +104,7 @@ greyMeanSolidAbsorptionEmission
     }
 
     label nFunc = 0;
-    const dictionary& functionDicts = dict.subDict(typeName + "Coeffs");
+    const dictionary& functionDicts = dict.optionalSubDict(typeName + "Coeffs");
 
     forAllConstIter(dictionary, functionDicts, iter)
     {

src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/wideBandAbsorptionEmission/wideBandAbsorptionEmission.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -53,7 +53,7 @@ Foam::radiation::wideBandAbsorptionEmission::wideBandAbsorptionEmission
 )
 :
     absorptionEmissionModel(dict, mesh),
-    coeffsDict_((dict.subDict(typeName + "Coeffs"))),
+    coeffsDict_((dict.optionalSubDict(typeName + "Coeffs"))),
     speciesNames_(0),
     specieIndex_(label(0)),
     lookUpTable_
@@ -67,7 +67,7 @@ Foam::radiation::wideBandAbsorptionEmission::wideBandAbsorptionEmission
     totalWaveLength_(0)
 {
     label nBand = 0;
-    const dictionary& functionDicts = dict.subDict(typeName +"Coeffs");
+    const dictionary& functionDicts = dict.optionalSubDict(typeName +"Coeffs");
     forAllConstIter(dictionary, functionDicts, iter)
     {
         // safety:

src/thermophysicalModels/radiation/submodels/scatterModel/constantScatter/constantScatter.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -53,7 +53,7 @@ Foam::radiation::constantScatter::constantScatter
 )
 :
     scatterModel(dict, mesh),
-    coeffsDict_(dict.subDict(typeName + "Coeffs")),
+    coeffsDict_(dict.optionalSubDict(typeName + "Coeffs")),
     sigma_(coeffsDict_.lookup("sigma")),
     C_(coeffsDict_.lookup("C"))
 {}

src/thermophysicalModels/thermophysicalProperties/liquidProperties/liquidProperties/liquidProperties.C

@@ -148,7 +148,10 @@ Foam::autoPtr<Foam::liquidProperties> Foam::liquidProperties::New
 
             return autoPtr<liquidProperties>
             (
-                cstrIter()(dict.subDict(liquidPropertiesTypeName + "Coeffs"))
+                cstrIter()
+                (
+                    dict.optionalSubDict(liquidPropertiesTypeName + "Coeffs")
+                )
             );
         }
     }

src/thermophysicalModels/thermophysicalProperties/solidProperties/solidProperties/solidPropertiesNew.C

@@ -78,7 +78,7 @@ Foam::autoPtr<Foam::solidProperties> Foam::solidProperties::New
         {
             return autoPtr<solidProperties>
             (
-                new solidProperties(dict.subDict(solidType + "Coeffs"))
+                new solidProperties(dict.optionalSubDict(solidType + "Coeffs"))
             );
         }
     }

src/topoChangerFvMesh/linearValveFvMesh/linearValveFvMesh.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -277,7 +277,7 @@ Foam::linearValveFvMesh::linearValveFvMesh(const IOobject& io)
                 IOobject::NO_WRITE,
                 false
             )
-        ).subDict(typeName + "Coeffs")
+        ).optionalSubDict(typeName + "Coeffs")
     ),
     msPtr_(motionSolver::New(*this))
 {

src/topoChangerFvMesh/linearValveLayersFvMesh/linearValveLayersFvMesh.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -356,7 +356,7 @@ Foam::linearValveLayersFvMesh::linearValveLayersFvMesh(const IOobject& io)
                 IOobject::NO_WRITE,
                 false
             )
-        ).subDict(typeName + "Coeffs")
+        ).optionalSubDict(typeName + "Coeffs")
     )
 {
     addZonesAndModifiers();

src/topoChangerFvMesh/mixerFvMesh/mixerFvMesh.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -293,7 +293,7 @@ Foam::mixerFvMesh::mixerFvMesh
                 IOobject::NO_WRITE,
                 false
             )
-        ).subDict(typeName + "Coeffs")
+        ).optionalSubDict(typeName + "Coeffs")
     ),
     csPtr_
     (

src/topoChangerFvMesh/movingConeTopoFvMesh/movingConeTopoFvMesh.C

@@ -263,7 +263,7 @@ Foam::movingConeTopoFvMesh::movingConeTopoFvMesh(const IOobject& io)
                 IOobject::NO_WRITE,
                 false
             )
-        ).subDict(typeName + "Coeffs")
+        ).optionalSubDict(typeName + "Coeffs")
     ),
     motionVelAmplitude_(motionDict_.lookup("motionVelAmplitude")),
     motionVelPeriod_(readScalar(motionDict_.lookup("motionVelPeriod"))),

src/transportModels/incompressible/viscosityModels/BirdCarreau/BirdCarreau.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -67,7 +67,10 @@ Foam::viscosityModels::BirdCarreau::BirdCarreau
 )
 :
     viscosityModel(name, viscosityProperties, U, phi),
-    BirdCarreauCoeffs_(viscosityProperties.subDict(typeName + "Coeffs")),
+    BirdCarreauCoeffs_
+    (
+        viscosityProperties.optionalSubDict(typeName + "Coeffs")
+    ),
     nu0_("nu0", dimViscosity, BirdCarreauCoeffs_),
     nuInf_("nuInf", dimViscosity, BirdCarreauCoeffs_),
     k_("k", dimTime, BirdCarreauCoeffs_),
@@ -104,7 +107,8 @@ bool Foam::viscosityModels::BirdCarreau::read
 {
     viscosityModel::read(viscosityProperties);
 
-    BirdCarreauCoeffs_ = viscosityProperties.subDict(typeName + "Coeffs");
+    BirdCarreauCoeffs_ =
+        viscosityProperties.optionalSubDict(typeName + "Coeffs");
 
     BirdCarreauCoeffs_.lookup("nu0") >> nu0_;
     BirdCarreauCoeffs_.lookup("nuInf") >> nuInf_;

src/transportModels/incompressible/viscosityModels/Casson/Casson.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2016-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -83,7 +83,7 @@ Foam::viscosityModels::Casson::Casson
 )
 :
     viscosityModel(name, viscosityProperties, U, phi),
-    CassonCoeffs_(viscosityProperties.subDict(typeName + "Coeffs")),
+    CassonCoeffs_(viscosityProperties.optionalSubDict(typeName + "Coeffs")),
     m_("m", dimViscosity, CassonCoeffs_),
     tau0_("tau0", dimViscosity/dimTime, CassonCoeffs_),
     nuMin_("nuMin", dimViscosity, CassonCoeffs_),
@@ -112,7 +112,7 @@ bool Foam::viscosityModels::Casson::read
 {
     viscosityModel::read(viscosityProperties);
 
-    CassonCoeffs_ = viscosityProperties.subDict(typeName + "Coeffs");
+    CassonCoeffs_ = viscosityProperties.optionalSubDict(typeName + "Coeffs");
 
     CassonCoeffs_.lookup("m") >> m_;
     CassonCoeffs_.lookup("tau0") >> tau0_;

src/transportModels/incompressible/viscosityModels/CrossPowerLaw/CrossPowerLaw.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -65,7 +65,10 @@ Foam::viscosityModels::CrossPowerLaw::CrossPowerLaw
 )
 :
     viscosityModel(name, viscosityProperties, U, phi),
-    CrossPowerLawCoeffs_(viscosityProperties.subDict(typeName + "Coeffs")),
+    CrossPowerLawCoeffs_
+    (
+        viscosityProperties.optionalSubDict(typeName + "Coeffs")
+    ),
     nu0_("nu0", dimViscosity, CrossPowerLawCoeffs_),
     nuInf_("nuInf", dimViscosity, CrossPowerLawCoeffs_),
     m_("m", dimTime, CrossPowerLawCoeffs_),
@@ -94,7 +97,8 @@ bool Foam::viscosityModels::CrossPowerLaw::read
 {
     viscosityModel::read(viscosityProperties);
 
-    CrossPowerLawCoeffs_ = viscosityProperties.subDict(typeName + "Coeffs");
+    CrossPowerLawCoeffs_ =
+        viscosityProperties.optionalSubDict(typeName + "Coeffs");
 
     CrossPowerLawCoeffs_.lookup("nu0") >> nu0_;
     CrossPowerLawCoeffs_.lookup("nuInf") >> nuInf_;

src/transportModels/incompressible/viscosityModels/HerschelBulkley/HerschelBulkley.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -78,7 +78,10 @@ Foam::viscosityModels::HerschelBulkley::HerschelBulkley
 )
 :
     viscosityModel(name, viscosityProperties, U, phi),
-    HerschelBulkleyCoeffs_(viscosityProperties.subDict(typeName + "Coeffs")),
+    HerschelBulkleyCoeffs_
+    (
+        viscosityProperties.optionalSubDict(typeName + "Coeffs")
+    ),
     k_("k", dimViscosity, HerschelBulkleyCoeffs_),
     n_("n", dimless, HerschelBulkleyCoeffs_),
     tau0_("tau0", dimViscosity/dimTime, HerschelBulkleyCoeffs_),
@@ -107,7 +110,8 @@ bool Foam::viscosityModels::HerschelBulkley::read
 {
     viscosityModel::read(viscosityProperties);
 
-    HerschelBulkleyCoeffs_ = viscosityProperties.subDict(typeName + "Coeffs");
+    HerschelBulkleyCoeffs_ =
+        viscosityProperties.optionalSubDict(typeName + "Coeffs");
 
     HerschelBulkleyCoeffs_.lookup("k") >> k_;
     HerschelBulkleyCoeffs_.lookup("n") >> n_;

src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -81,7 +81,7 @@ Foam::viscosityModels::powerLaw::powerLaw
 )
 :
     viscosityModel(name, viscosityProperties, U, phi),
-    powerLawCoeffs_(viscosityProperties.subDict(typeName + "Coeffs")),
+    powerLawCoeffs_(viscosityProperties.optionalSubDict(typeName + "Coeffs")),
     k_("k", dimViscosity, powerLawCoeffs_),
     n_("n", dimless, powerLawCoeffs_),
     nuMin_("nuMin", dimViscosity, powerLawCoeffs_),
@@ -110,7 +110,7 @@ bool Foam::viscosityModels::powerLaw::read
 {
     viscosityModel::read(viscosityProperties);
 
-    powerLawCoeffs_ = viscosityProperties.subDict(typeName + "Coeffs");
+    powerLawCoeffs_ = viscosityProperties.optionalSubDict(typeName + "Coeffs");
 
     powerLawCoeffs_.lookup("k") >> k_;
     powerLawCoeffs_.lookup("n") >> n_;

src/transportModels/incompressible/viscosityModels/strainRateFunction/strainRateFunction.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2016-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -56,7 +56,10 @@ Foam::viscosityModels::strainRateFunction::strainRateFunction
 )
 :
     viscosityModel(name, viscosityProperties, U, phi),
-    strainRateFunctionCoeffs_(viscosityProperties.subDict(typeName + "Coeffs")),
+    strainRateFunctionCoeffs_
+    (
+        viscosityProperties.optionalSubDict(typeName + "Coeffs")
+    ),
     strainRateFunction_
     (
         Function1<scalar>::New("function", strainRateFunctionCoeffs_)
@@ -119,7 +122,7 @@ bool Foam::viscosityModels::strainRateFunction::read
 {
     viscosityModel::read(viscosityProperties);
 
-    strainRateFunctionCoeffs_ = viscosityProperties.subDict
+    strainRateFunctionCoeffs_ = viscosityProperties.optionalSubDict
     (
         typeName + "Coeffs"
     );

tutorials/combustion/PDRFoam/flamePropagationWithObstacles/constant/dynamicMeshDict

@@ -16,43 +16,38 @@ FoamFile
 
 dynamicFvMesh      dynamicRefineFvMesh;
 
+// Refine every refineInterval timesteps
+refineInterval 1;
 
-dynamicRefineFvMeshCoeffs
+// Maximum refinement level (starts from 0)
-{
+maxRefinement 2;
 
-    // Refine every refineInterval timesteps
+// Maximum cell limit (approximate)
-    refineInterval 1;
+maxCells 10000;
 
-    // Maximum refinement level (starts from 0)
+// volScalarField to base refinement on
-    maxRefinement 2;
+field normalisedGradP;
 
-    // Maximum cell limit (approximate)
+nBufferLayers 1;
-    maxCells 10000;
 
-    // volScalarField to base refinement on
+dumpLevel true;
-    field normalisedGradP;
 
-    nBufferLayers 1;
+lowerRefineLevel 0.5;
+upperRefineLevel 1.5;
 
-    dumpLevel true;
+unrefineLevel 0.5;
 
-    lowerRefineLevel 0.5;
+nBufferLayers 1;
-    upperRefineLevel 1.5;
+// Newly introduced patch points optionally get projected onto a surface
+//projectSurfaces ("fixedWalls4.stl");
+//projectPatches (fixedWalls);
+// Maximum project distance
+//projectDistance 1;
 
-    unrefineLevel 0.5;
+// Fluxes to adapt. For newly created faces or split faces the flux
-
+// gets estimated from an interpolated volVectorField ('velocity')
-    nBufferLayers 1;
+// First is name of the flux to adapt, second is velocity that will
-    // Newly introduced patch points optionally get projected onto a surface
+// be interpolated and inner-producted with the face area vector.
-    //projectSurfaces ("fixedWalls4.stl");
+correctFluxes ((phi rhoU) (phi_0 none));
-    //projectPatches (fixedWalls);
-    // Maximum project distance
-    //projectDistance 1;
-
-    // Fluxes to adapt. For newly created faces or split faces the flux
-    // gets estimated from an interpolated volVectorField ('velocity')
-    // First is name of the flux to adapt, second is velocity that will
-    // be interpolated and inner-producted with the face area vector.
-     correctFluxes ((phi rhoU) (phi_0 none));
-}
 
 // ************************************************************************* //

tutorials/compressible/rhoCentralDyMFoam/movingCone/constant/dynamicMeshDict

@@ -17,15 +17,12 @@ FoamFile
 
 dynamicFvMesh   dynamicMotionSolverFvMesh;
 
-motionSolverLibs ( "libfvMotionSolvers.so" );
+motionSolverLibs ("libfvMotionSolvers.so");
 
-solver          velocityComponentLaplacian;
+motionSolver    velocityComponentLaplacian;
 
-velocityComponentLaplacianCoeffs
+component       x;
-{
+diffusivity     directional (1 200 0);
-    component       x;
-    diffusivity     directional (1 200 0);
-}
 
 
 // ************************************************************************* //

tutorials/compressible/rhoPimpleDyMFoam/annularThermalMixer/constant/dynamicMeshDict

@@ -19,19 +19,14 @@ FoamFile
 
 dynamicFvMesh   dynamicMotionSolverFvMesh;
 
-solver solidBody;
+motionSolver    solidBody;
 
-solidBodyCoeffs
+cellZone        rotatingZone;
-{
-    cellZone        rotatingZone;
 
-    solidBodyMotionFunction  rotatingMotion;
+solidBodyMotionFunction  rotatingMotion;
-    rotatingMotionCoeffs
+
-    {
+origin      (0 0 0);
-        origin      (0 0 0);
+axis        (0 0 1);
-        axis        (0 0 1);
+omega       $:meshMotionProperties.omega;
-        omega       $:meshMotionProperties.omega;
-    }
-}
 
 // ************************************************************************* //

tutorials/compressible/sonicDyMFoam/movingCone/constant/dynamicMeshDict

@@ -17,15 +17,12 @@ FoamFile
 
 dynamicFvMesh   dynamicMotionSolverFvMesh;
 
-motionSolverLibs ( "libfvMotionSolvers.so" );
+motionSolverLibs ("libfvMotionSolvers.so");
 
-solver          velocityComponentLaplacian;
+motionSolver    velocityComponentLaplacian;
 
-velocityComponentLaplacianCoeffs
+component       x;
-{
+diffusivity     directional (1 200 0);
-    component       x;
-    diffusivity     directional (1 200 0);
-}
 
 
 // ************************************************************************* //

tutorials/incompressible/pimpleDyMFoam/mixerVesselAMI2D/constant/dynamicMeshDict

@@ -17,19 +17,14 @@ FoamFile
 
 dynamicFvMesh   dynamicMotionSolverFvMesh;
 
-solver solidBody;
+motionSolver    solidBody;
 
-solidBodyCoeffs
+cellZone        rotor;
-{
-    cellZone        rotor;
 
-    solidBodyMotionFunction  rotatingMotion;
+solidBodyMotionFunction  rotatingMotion;
-    rotatingMotionCoeffs
+
-    {
+origin        (0 0 0);
-        origin        (0 0 0);
+axis          (0 0 1);
-        axis          (0 0 1);
+omega         6.2832; // rad/s
-        omega         6.2832; // rad/s
-    }
-}
 
 // ************************************************************************* //

tutorials/incompressible/pimpleDyMFoam/movingCone/constant/dynamicMeshDict

@@ -17,15 +17,12 @@ FoamFile
 
 dynamicFvMesh   dynamicMotionSolverFvMesh;
 
-motionSolverLibs ( "libfvMotionSolvers.so" );
+motionSolverLibs ("libfvMotionSolvers.so");
 
-solver          velocityComponentLaplacian;
+motionSolver    velocityComponentLaplacian;
 
-velocityComponentLaplacianCoeffs
+component       x;
-{
+diffusivity     directional (1 200 0);
-    component       x;
-    diffusivity     directional (1 200 0);
-}
 
 
 // ************************************************************************* //

tutorials/incompressible/pimpleDyMFoam/oscillatingInletACMI2D/constant/dynamicMeshDict

@@ -17,22 +17,16 @@ FoamFile
 
 dynamicFvMesh   dynamicMotionSolverFvMesh;
 
-motionSolverLibs ( "libfvMotionSolvers.so" );
+motionSolverLibs ("libfvMotionSolvers.so");
 
-solver solidBody;
+motionSolver    solidBody;
 
-solidBodyCoeffs
+cellZone        inletChannel;
-{
-    cellZone        inletChannel;
 
-    solidBodyMotionFunction  oscillatingLinearMotion;
+solidBodyMotionFunction  oscillatingLinearMotion;
 
-    oscillatingLinearMotionCoeffs
+amplitude       (0 0.5 0);
-    {
+omega           3.14; // rad/s  (.5 rps)
-        amplitude       (0 0.5 0);
-        omega           3.14; // rad/s  (.5 rps)
-    }
-}
 
 
 // ************************************************************************* //

tutorials/incompressible/pimpleDyMFoam/propeller/constant/dynamicMeshDict

@@ -17,22 +17,16 @@ FoamFile
 
 dynamicFvMesh   dynamicMotionSolverFvMesh;
 
-motionSolverLibs ( "libfvMotionSolvers.so" );
+motionSolverLibs ("libfvMotionSolvers.so");
 
-solver solidBody;
+motionSolver    solidBody;
 
-solidBodyCoeffs
+cellZone        innerCylinderSmall;
-{
-    cellZone        innerCylinderSmall;
 
-    solidBodyMotionFunction  rotatingMotion;
+solidBodyMotionFunction  rotatingMotion;
-    rotatingMotionCoeffs
-    {
-        origin      (0 0 0);
-        axis        (0 1 0);
-        omega       158; // rad/s
-    }
-}
 
+origin      (0 0 0);
+axis        (0 1 0);
+omega       158; // rad/s
 
 // ************************************************************************* //