WIP: mapped PstreamBuffers with NBX

ENH: sparse storage and data exchange for PstreamBuffers

- change the underlying storage from a numProcs list of buffers to a
  Map of buffers. The reduced memory footprint on large systems is
  on aspect but the primary motivation is to more easily support
  sparse data exchange patterns.
  The Map storage for PstreamBuffers corresponds to a non-blocking
  consensus exchange of sizes that automatically propagates through
  different parts of the code and avoids all-to-all.

CONFIG: enable nonBlockingExchange as default (for testing)

- this changes the Pstream::exchangeSizes to use NBX instead of
  all-to-all, even for List containers.

.gitignore

@@ -11,7 +11,6 @@
 
 # File-browser settings - anywhere
 .directory
-.DS_Store   # OSX app store 
 
 # Backup/recovery versions - anywhere
 .#*
@@ -39,8 +38,6 @@ linux*Gcc*/
 linux*Icc*/
 solaris*Gcc*/
 SunOS*Gcc*/
-darwin*Clang*/
-darwin*Gcc*/
 platforms/
 
 # Top-level build directories

.gitlab/issue_templates/bug.md

@@ -49,10 +49,10 @@
 
 <!--
   Providing details of your set-up can help us identify any issues, e.g.
-  OpenFOAM version : v2506|v2412|v2406|v2312|v2306 etc
-  Operating system : ubuntu|openSUSE|RedHat etc
+  OpenFOAM version : v2212|v2206|v2112|v2106|v2012 etc
+  Operating system : ubuntu|openSUSE|centos etc
   Hardware info    : any info that may help?
-  Compiler         : gcc|clang etc
+  Compiler         : gcc|intel|clang etc
  -->
 
 - OpenFOAM version :

.gitmodules

@@ -1,8 +1,8 @@
 [submodule "cfmesh"]
-	path = plugins/cfmesh
+	path = modules/cfmesh
 	url = https://develop.openfoam.com/Community/integration-cfmesh.git
 [submodule "avalanche"]
-	path = plugins/avalanche
+	path = modules/avalanche
 	url = https://develop.openfoam.com/Community/avalanche.git
 [submodule "adios"]
 	path = modules/adios
@@ -17,9 +17,3 @@
 [submodule "external-solver"]
 	path = modules/external-solver
 	url = https://develop.openfoam.com/Modules/external-solver.git
-[submodule "turbulence-community"]
-	path = plugins/turbulence-community
-	url = https://gitlab.com/openfoam/community/tc-turbulence/turbulence-community.git
-[submodule "plugins/data-community"]
-	path = plugins/data-community
-	url = https://gitlab.com/openfoam/community/sig-data-modelling/data-community.git

Allwmake

@@ -68,34 +68,19 @@ src/Allwmake $targetType $*
 # OpenFOAM applications
 applications/Allwmake $targetType $*
 
-#------------------------------------------------------------------------------
-# Additional components
 
+# Additional components/modules
 case "$FOAM_MODULE_PREFIX" in
 (false | none)
     echo ========================================
     echo "OpenFOAM modules disabled (prefix=${FOAM_MODULE_PREFIX})"
-    echo "Can be built separately:"
-    echo
-    echo "    ./Allwmake-modules -prefix=..."
-    echo
-    echo ========================================
     echo
     ;;
 (*)
     # Use wmake -all instead of Allwmake to allow for overrides
     ( cd "$WM_PROJECT_DIR/modules" 2>/dev/null && wmake -all )
-
-    echo ========================================
-    echo "The optional plugins can be built separately:"
-    echo
-    echo "    ./Allwmake-plugins -prefix=..."
-    echo
-    echo ========================================
-    echo
 esac
 
-#------------------------------------------------------------------------------
 # Count files in given directory. Ignore "Test-*" binaries.
 _foamCountDirEntries()
 {
@@ -111,12 +96,10 @@ echo "  ${WM_PROJECT_DIR##*/}"
 echo "  $WM_COMPILER ${WM_COMPILER_TYPE:-system} compiler"
 echo "  ${WM_OPTIONS}, with ${WM_MPLIB} ${FOAM_MPI}"
 echo
-
-# The api/patch information
-sed -e 's/^/  /; s/=/ = /' ./META-INFO/api-info 2>/dev/null || true
-
-echo "  bin = $(_foamCountDirEntries "$FOAM_APPBIN") entries"
-echo "  lib = $(_foamCountDirEntries "$FOAM_LIBBIN") entries"
+echo "  api   = $(etc/openfoam -show-api 2>/dev/null)"
+echo "  patch = $(etc/openfoam -show-patch 2>/dev/null)"
+echo "  bin   = $(_foamCountDirEntries "$FOAM_APPBIN") entries"
+echo "  lib   = $(_foamCountDirEntries "$FOAM_LIBBIN") entries"
 echo
 echo ========================================
 

Allwmake-modules

@@ -1,39 +0,0 @@
-#!/bin/sh
-cd "${0%/*}" || exit            # Run from this directory
-set -- -all="${0##*/}" "$@"     # Execute this instead of ./Allwmake
-
-# Run from OPENFOAM top-level directory only
-wmake -check-dir "$WM_PROJECT_DIR" 2>/dev/null || {
-    echo "Error (${0##*/}) : not located in \$WM_PROJECT_DIR"
-    echo "    Check your OpenFOAM environment and installation"
-    exit 1
-}
-if [ -f "$WM_PROJECT_DIR"/wmake/scripts/AllwmakeParseArguments ]
-then  . "$WM_PROJECT_DIR"/wmake/scripts/AllwmakeParseArguments || \
-    echo "Argument parse error"
-else
-    echo "Error (${0##*/}) : WM_PROJECT_DIR appears to be incorrect"
-    echo "    Check your OpenFOAM environment and installation"
-    exit 1
-fi
-
-#------------------------------------------------------------------------------
-# Additional components
-
-case "$FOAM_MODULE_PREFIX" in
-(false | none)
-    echo ========================================
-    echo "OpenFOAM modules disabled (prefix=${FOAM_MODULE_PREFIX})"
-    echo "Can be built separately:"
-    echo
-    echo "    ./Allwmake-modules -prefix=..."
-    echo
-    echo ========================================
-    echo
-    ;;
-(*)
-    # Use wmake -all instead of Allwmake to allow for overrides
-    ( cd "$WM_PROJECT_DIR/modules" 2>/dev/null && wmake -all $* )
-esac
-
-#------------------------------------------------------------------------------

Allwmake-plugins

@@ -1,39 +0,0 @@
-#!/bin/sh
-cd "${0%/*}" || exit            # Run from this directory
-set -- -all="${0##*/}" "$@"     # Execute this instead of ./Allwmake
-
-# Run from OPENFOAM top-level directory only
-wmake -check-dir "$WM_PROJECT_DIR" 2>/dev/null || {
-    echo "Error (${0##*/}) : not located in \$WM_PROJECT_DIR"
-    echo "    Check your OpenFOAM environment and installation"
-    exit 1
-}
-if [ -f "$WM_PROJECT_DIR"/wmake/scripts/AllwmakeParseArguments ]
-then  . "$WM_PROJECT_DIR"/wmake/scripts/AllwmakeParseArguments || \
-    echo "Argument parse error"
-else
-    echo "Error (${0##*/}) : WM_PROJECT_DIR appears to be incorrect"
-    echo "    Check your OpenFOAM environment and installation"
-    exit 1
-fi
-
-#------------------------------------------------------------------------------
-# Additional components
-
-case "$FOAM_MODULE_PREFIX" in
-(false | none)
-    echo ========================================
-    echo "OpenFOAM plugins disabled (prefix=${FOAM_MODULE_PREFIX})"
-    echo "Can be built separately:"
-    echo
-    echo "    ./Allwmake-plugins -prefix=..."
-    echo
-    echo ========================================
-    echo
-    ;;
-(*)
-    # Use wmake -all instead of Allwmake to allow for overrides
-    ( cd "$WM_PROJECT_DIR/plugins" 2>/dev/null && wmake -all $* )
-esac
-
-#------------------------------------------------------------------------------

CONTRIBUTORS.md

@@ -5,29 +5,22 @@ It is likely incomplete...
 
 ## Contributors (alphabetical by surname)
 
-- Horacio Aguerre
-- Yu Ankun
 - Tetsuo Aoyagi
 - Akira Azami
-- Pete Bachant
 - William Bainbridge
 - Gabriel Barajas
 - Kutalmis Bercin
-- Julius Bergmann
 - Ivor Clifford
 - Greg Collecutt
 - Jonathan Cranford
-- Santiago Marquez Damian
 - Sergio Ferraris
 - Matej Forman
 - Marian Fuchs
-- Gabriel Gerlero
 - Pawan Ghildiyal
 - Chris Greenshields
 - Bernhard Gschaider
 - Andrew Heather
 - David Hill
-- Crist<73>bal Ib<49><62>ez
 - Yoshiaki Inoue
 - Mattijs Janssens
 - Andrew Jackson
@@ -35,7 +28,6 @@ It is likely incomplete...
 - Alexander Kabat vel Job
 - Thilo Knacke
 - Shannon Leakey
-- Sergey Lesnik
 - Tommaso Lucchini
 - Graham Macpherson
 - Alexey Matveichev
@@ -48,7 +40,6 @@ It is likely incomplete...
 - Victor Olesen
 - Evangelos Papoutsis-Kiachagias
 - Juho Peltola
-- Josep Pocurull
 - Johan Roenby
 - Henrik Rusche
 - Bruno Santos
@@ -59,12 +50,8 @@ It is likely incomplete...
 - Gavin Tabor
 - Zeljko Tukovic
 - Eugene De Villiers
-- Louis Vittoz
-- Vuko Vukcevic
 - Yi Wang
 - Norbert Weber
-- Gregor Weiss
-- Volker Weissmann
 - Henry Weller
 - Niklas Wikstrom
 - Guanyang Xue

META-INFO/api-info

@@ -1,2 +1,2 @@
-api=2507
-patch=0
+api=2301
+patch=230110

README.md

@@ -40,9 +40,9 @@ Violations of the Trademark are monitored, and will be duly prosecuted.
 
 If OpenFOAM has already been compiled on your system, simply source
 the appropriate `etc/bashrc` or `etc/cshrc` file and get started.
-For example, for the OpenFOAM-v2506 version:
+For example, for the OpenFOAM-v2212 version:
 ```
-source /installation/path/OpenFOAM-v2506/etc/bashrc
+source /installation/path/OpenFOAM-v2212/etc/bashrc
 ```
 
 ## Compiling OpenFOAM
@@ -127,8 +127,8 @@ These 3rd-party sources are normally located in a directory parallel
 to the OpenFOAM directory. For example,
 ```
 /path/parent
-|-- OpenFOAM-v2506
-\-- ThirdParty-v2506
+|-- OpenFOAM-v2212
+\-- ThirdParty-v2212
 ```
 There are, however, many cases where this simple convention is inadequate:
 
@@ -136,7 +136,7 @@ There are, however, many cases where this simple convention is inadequate:
   operating system or cluster installation provides it)
 
 * When we have changed the OpenFOAM directory name to some arbitrary
-  directory name, e.g. openfoam-sandbox2412, etc..
+  directory name, e.g. openfoam-sandbox2212, etc..
 
 * When we would like any additional 3rd party software to be located
   inside of the OpenFOAM directory to ensure that the installation is
@@ -156,9 +156,9 @@ when locating the ThirdParty directory with the following precedence:
 2. PREFIX/ThirdParty-VERSION
    * this corresponds to the traditional approach
 3. PREFIX/ThirdParty-vAPI
-   * allows for an updated value of VERSION, *eg*, `v2506-myCustom`,
+   * allows for an updated value of VERSION, *eg*, `v2212-myCustom`,
      without requiring a renamed ThirdParty. The API value would still
-     be `2412` and the original `ThirdParty-v2506/` would be found.
+     be `2212` and the original `ThirdParty-v2212/` would be found.
 4. PREFIX/ThirdParty-API
    * same as the previous example, but using an unadorned API value.
 5. PREFIX/ThirdParty-common
@@ -213,4 +213,4 @@ ThirdParty directory will contain either an `Allwmake` file or a
 - [Governance](http://www.openfoam.com/governance/), [Governance Projects](https://www.openfoam.com/governance/projects)
 - [Contacting OpenCFD](http://www.openfoam.com/contact/)
 
-Copyright 2016-2024 OpenCFD Ltd
+Copyright 2016-2022 OpenCFD Ltd

applications/solvers/DNS/dnsFoam/dnsFoam.C

@@ -118,7 +118,7 @@ int main(int argc, char *argv[])
                 fvm::laplacian(rAUf, p) == fvc::div(phiHbyA)
             );
 
-            pEqn.solve(p.select(piso.finalInnerIter()));
+            pEqn.solve(mesh.solver(p.select(piso.finalInnerIter())));
 
             phi = phiHbyA - pEqn.flux();
 

applications/solvers/acoustic/acousticFoam/readTransportProperties.H

@@ -18,6 +18,6 @@ dimensionedScalar rho("rho", dimDensity, transportProperties);
 
 scalar MaxCo =
     max(mesh.surfaceInterpolation::deltaCoeffs()*c0).value()
-   *runTime.deltaTValue();
+   *runTime.deltaT().value();
 
 Info<< "Max acoustic Courant Number = " << MaxCo << endl;

applications/solvers/basic/potentialFoam/createFields.H

@@ -13,13 +13,7 @@ volVectorField U
 );
 
 // Initialise the velocity internal field to zero
-// Note: explicitly bypass evaluation of contraint patch overrides
-//       (e.g. swirlFanVelocity might lookup phi,rho)
-//U = Zero;
-{
-    U.internalFieldRef() = Zero;
-    U.boundaryFieldRef() = Zero;
-}
+U = dimensionedVector(U.dimensions(), Zero);
 
 surfaceScalarField phi
 (

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

@@ -6,7 +6,6 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -94,14 +93,24 @@ Foam::PDRDragModels::basic::~basic()
 
 Foam::tmp<Foam::volSymmTensorField> Foam::PDRDragModels::basic::Dcu() const
 {
-    auto tDragDcu = volSymmTensorField::New
+    tmp<volSymmTensorField> tDragDcu
     (
-        "tDragDcu",
-        IOobject::NO_REGISTER,
-        U_.mesh(),
-        dimensionedSymmTensor(dimMass/dimTime/dimVolume, Zero)
+        new volSymmTensorField
+        (
+            IOobject
+            (
+                "tDragDcu",
+                U_.mesh().time().constant(),
+                U_.mesh(),
+                IOobject::NO_READ,
+                IOobject::NO_WRITE
+            ),
+            U_.mesh(),
+            dimensionedSymmTensor(dimMass/dimTime/dimVolume, Zero)
+        )
     );
-    auto& DragDcu = tDragDcu.ref();
+
+    volSymmTensorField& DragDcu = tDragDcu.ref();
 
     if (on_)
     {
@@ -118,14 +127,24 @@ Foam::tmp<Foam::volSymmTensorField> Foam::PDRDragModels::basic::Dcu() const
 
 Foam::tmp<Foam::volScalarField> Foam::PDRDragModels::basic::Gk() const
 {
-    auto tGk = volScalarField::New
+    tmp<volScalarField> tGk
     (
-        "tGk",
-        IOobject::NO_REGISTER,
-        U_.mesh(),
-        dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
+        new volScalarField
+        (
+            IOobject
+            (
+                "tGk",
+                U_.mesh().time().constant(),
+                U_.mesh(),
+                IOobject::NO_READ,
+                IOobject::NO_WRITE
+            ),
+            U_.mesh(),
+            dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
+        )
     );
-    auto& Gk = tGk.ref();
+
+    volScalarField& Gk = tGk.ref();
 
     if (on_)
     {

applications/solvers/combustion/PDRFoam/PDRModels/turbulence/PDRkEpsilon/PDRkEpsilon.C

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2019-2020,2023 OpenCFD Ltd.
+    Copyright (C) 2019-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -132,11 +132,6 @@ void PDRkEpsilon::correct()
 
     // Update epsilon and G at the wall
     epsilon_.boundaryFieldRef().updateCoeffs();
-    // Push new cell values to
-    // coupled neighbours. Note that we want to avoid the re-updateCoeffs
-    // of the wallFunctions so make sure to bypass the evaluate on
-    // those patches and only do the coupled ones.
-    epsilon_.boundaryFieldRef().evaluateCoupled<coupledFvPatch>();
 
     // Add the blockage generation term so that it is included consistently
     // in both the k and epsilon equations

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

@@ -69,8 +69,7 @@ Foam::XiEqModels::Gulder::~Gulder()
 Foam::tmp<Foam::volScalarField> Foam::XiEqModels::Gulder::XiEq() const
 {
     volScalarField up(sqrt((2.0/3.0)*turbulence_.k()));
-    const tmp<volScalarField> tepsilon(turbulence_.epsilon());
-    const volScalarField& epsilon = tepsilon();
+    const volScalarField& epsilon = turbulence_.epsilon();
 
     if (subGridSchelkin_)
     {

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

@@ -6,7 +6,6 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -76,10 +75,8 @@ Foam::XiEqModels::SCOPEXiEq::~SCOPEXiEq()
 
 Foam::tmp<Foam::volScalarField> Foam::XiEqModels::SCOPEXiEq::XiEq() const
 {
-    const tmp<volScalarField> tk(turbulence_.k());
-    const volScalarField& k = tk();
-    const tmp<volScalarField> tepsilon(turbulence_.epsilon());
-    const volScalarField& epsilon = tepsilon();
+    const volScalarField& k = turbulence_.k();
+    const volScalarField& epsilon = turbulence_.epsilon();
 
     volScalarField up(sqrt((2.0/3.0)*k));
     if (subGridSchelkin_)
@@ -94,14 +91,23 @@ Foam::tmp<Foam::volScalarField> Foam::XiEqModels::SCOPEXiEq::XiEq() const
     volScalarField K(0.157*upBySu/sqrt(Rl));
     volScalarField Ma(MaModel.Ma());
 
-    auto tXiEq = volScalarField::New
+    tmp<volScalarField> tXiEq
     (
-        "XiEq",
-        IOobject::NO_REGISTER,
-        epsilon.mesh(),
-        dimensionedScalar(dimless, Zero)
+        new volScalarField
+        (
+            IOobject
+            (
+                "XiEq",
+                epsilon.time().timeName(),
+                epsilon.db(),
+                IOobject::NO_READ,
+                IOobject::NO_WRITE
+            ),
+            epsilon.mesh(),
+            dimensionedScalar(dimless, Zero)
+        )
     );
-    auto& xieq = tXiEq.ref();
+    volScalarField& xieq = tXiEq.ref();
 
     forAll(xieq, celli)
     {

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

@@ -78,10 +78,11 @@ bool Foam::XiEqModel::read(const dictionary& XiEqProperties)
 void Foam::XiEqModel::writeFields() const
 {
     //***HGW It is not clear why B is written here
-    const auto* B = Su_.mesh().cfindObject<volSymmTensorField>("B");
-    if (B)
+    if (Su_.mesh().foundObject<volSymmTensorField>("B"))
     {
-        B->write();
+        const volSymmTensorField& B =
+            Su_.mesh().lookupObject<volSymmTensorField>("B");
+        B.write();
     }
 }
 
@@ -97,26 +98,39 @@ Foam::XiEqModel::calculateSchelkinEffect(const scalar uPrimeCoef) const
     const volSymmTensorField& nsv =
         mesh.lookupObject<volSymmTensorField>("nsv");
 
-    auto tN = volScalarField::New
+    tmp<volScalarField> tN
     (
-        "tN",
-        IOobject::NO_REGISTER,
-        mesh,
-        dimensionedScalar(Nv.dimensions(), Zero)
+        new volScalarField
+        (
+            IOobject
+            (
+                "tN",
+                mesh.time().timeName(),
+                mesh,
+                IOobject::NO_READ,
+                IOobject::NO_WRITE,
+                false
+            ),
+            mesh,
+            dimensionedScalar(Nv.dimensions(), Zero)
+        )
     );
-    auto& N = tN.ref();
-
+    volScalarField& N = tN.ref();
     N.primitiveFieldRef() = Nv.primitiveField()*pow(mesh.V(), 2.0/3.0);
 
-    auto tns = volSymmTensorField::New
+    volSymmTensorField ns
     (
-        "tns",
-        IOobject::NO_REGISTER,
+        IOobject
+        (
+            "tns",
+            mesh.time().timeName(),
+            mesh,
+            IOobject::NO_READ,
+            IOobject::NO_WRITE
+        ),
         mesh,
         dimensionedSymmTensor(nsv.dimensions(), Zero)
     );
-    auto& ns = tns.ref();
-
     ns.primitiveFieldRef() = nsv.primitiveField()*pow(mesh.V(), 2.0/3.0);
 
     const volVectorField Uhat

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

@@ -66,8 +66,7 @@ Foam::XiGModels::KTS::~KTS()
 Foam::tmp<Foam::volScalarField> Foam::XiGModels::KTS::G() const
 {
     volScalarField up(sqrt((2.0/3.0)*turbulence_.k()));
-    const tmp<volScalarField> tepsilon(turbulence_.epsilon());
-    const volScalarField& epsilon = tepsilon();
+    const volScalarField& epsilon = turbulence_.epsilon();
 
     volScalarField tauEta(sqrt(mag(thermo_.muu()/(thermo_.rhou()*epsilon))));
 

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

@@ -6,7 +6,6 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017 OpenFOAM Foundation
-    Copyright (C) 2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -256,14 +255,24 @@ Foam::tmp<Foam::volScalarField> Foam::laminarFlameSpeedModels::SCOPE::Su0pTphi
     scalar phi
 ) const
 {
-    auto tSu0 = volScalarField::New
+    tmp<volScalarField> tSu0
     (
-        "Su0",
-        IOobject::NO_REGISTER,
-        p.mesh(),
-        dimensionedScalar(dimVelocity, Zero)
+        new volScalarField
+        (
+            IOobject
+            (
+                "Su0",
+                p.time().timeName(),
+                p.db(),
+                IOobject::NO_READ,
+                IOobject::NO_WRITE
+            ),
+            p.mesh(),
+            dimensionedScalar(dimVelocity, Zero)
+        )
     );
-    auto& Su0 = tSu0.ref();
+
+    volScalarField& Su0 = tSu0.ref();
 
     forAll(Su0, celli)
     {
@@ -295,14 +304,24 @@ Foam::tmp<Foam::volScalarField> Foam::laminarFlameSpeedModels::SCOPE::Su0pTphi
     const volScalarField& phi
 ) const
 {
-    auto tSu0 = volScalarField::New
+    tmp<volScalarField> tSu0
     (
-        "Su0",
-        IOobject::NO_REGISTER,
-        p.mesh(),
-        dimensionedScalar(dimVelocity, Zero)
+        new volScalarField
+        (
+            IOobject
+            (
+                "Su0",
+                p.time().timeName(),
+                p.db(),
+                IOobject::NO_READ,
+                IOobject::NO_WRITE
+            ),
+            p.mesh(),
+            dimensionedScalar(dimVelocity, Zero)
+        )
     );
-    auto& Su0 = tSu0.ref();
+
+    volScalarField& Su0 = tSu0.ref();
 
     forAll(Su0, celli)
     {
@@ -339,14 +358,24 @@ Foam::tmp<Foam::volScalarField> Foam::laminarFlameSpeedModels::SCOPE::Ma
     const volScalarField& phi
 ) const
 {
-    auto tMa = volScalarField::New
+    tmp<volScalarField> tMa
     (
-        "Ma",
-        IOobject::NO_REGISTER,
-        phi.mesh(),
-        dimensionedScalar(dimless, Zero)
+        new volScalarField
+        (
+            IOobject
+            (
+                "Ma",
+                phi.time().timeName(),
+                phi.db(),
+                IOobject::NO_READ,
+                IOobject::NO_WRITE
+            ),
+            phi.mesh(),
+            dimensionedScalar(dimless, Zero)
+        )
     );
-    auto& ma = tMa.ref();
+
+    volScalarField& ma = tMa.ref();
 
     forAll(ma, celli)
     {
@@ -389,12 +418,21 @@ Foam::laminarFlameSpeedModels::SCOPE::Ma() const
     {
         const fvMesh& mesh = psiuReactionThermo_.p().mesh();
 
-        return volScalarField::New
+        return tmp<volScalarField>
         (
-            "Ma",
-            IOobject::NO_REGISTER,
-            mesh,
-            dimensionedScalar("Ma", dimless, Ma(equivalenceRatio_))
+            new volScalarField
+            (
+                IOobject
+                (
+                    "Ma",
+                    mesh.time().timeName(),
+                    mesh,
+                    IOobject::NO_READ,
+                    IOobject::NO_WRITE
+                ),
+                mesh,
+                dimensionedScalar("Ma", dimless, Ma(equivalenceRatio_))
+            )
         );
     }
 }

applications/solvers/combustion/PDRFoam/pEqn.H

@@ -27,7 +27,7 @@ if (pimple.transonic())
             betav*fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -57,7 +57,7 @@ else
             betav*fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/combustion/PDRFoam/setDeltaT.H

@@ -36,13 +36,11 @@ Description
 if (adjustTimeStep)
 {
     scalar maxDeltaTFact = maxCo/(CoNum + StCoNum + SMALL);
-
-    const scalar deltaTFact =
-        Foam::min(Foam::min(maxDeltaTFact, 1.0 + 0.1*maxDeltaTFact), 1.2);
+    scalar deltaTFact = min(min(maxDeltaTFact, 1.0 + 0.1*maxDeltaTFact), 1.2);
 
     runTime.setDeltaT
     (
-        Foam::min
+        min
         (
             deltaTFact*runTime.deltaTValue(),
             maxDeltaT

applications/solvers/combustion/XiFoam/XiDyMFoam/pEqn.H

@@ -30,7 +30,7 @@ if (pimple.transonic())
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -66,7 +66,7 @@ else
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/combustion/XiFoam/XiEngineFoam/pEqn.H

@@ -35,7 +35,7 @@ if (pimple.transonic())
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -71,7 +71,7 @@ else
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/combustion/XiFoam/bEqn.H

@@ -223,7 +223,7 @@ if (ign.ignited())
         volScalarField R(Gstar*XiEqStar/(XiEqStar - scalar(1)));
         volScalarField G(R*(XiEq - scalar(1.001))/XiEq);
 
-        //R *= (Gstar + 2*mag(devSymm(fvc::grad(U))))/Gstar;
+        //R *= (Gstar + 2*mag(dev(symm(fvc::grad(U)))))/Gstar;
 
         // Solve for the flame wrinkling
         // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

applications/solvers/combustion/XiFoam/pEqn.H

@@ -29,7 +29,7 @@ if (pimple.transonic())
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -64,7 +64,7 @@ else
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/combustion/chemFoam/YEqn.H

@@ -6,7 +6,7 @@
         solve
         (
             fvm::ddt(rho, Yi) - chemistry.RR(specieI),
-            "Yi"
+            mesh.solver("Yi")
         );
     }
 }

applications/solvers/combustion/chemFoam/createBaseFields.H

@@ -12,7 +12,7 @@ Info<< "Creating base fields for time " << runTime.timeName() << endl;
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            IOobject::NO_REGISTER
+            false
         ),
         mesh,
         dimensionedScalar("Ydefault", dimless, 1)
@@ -29,7 +29,7 @@ Info<< "Creating base fields for time " << runTime.timeName() << endl;
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            IOobject::NO_REGISTER
+            false
         ),
         mesh,
         dimensionedScalar("p", dimPressure, p0)
@@ -46,7 +46,7 @@ Info<< "Creating base fields for time " << runTime.timeName() << endl;
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            IOobject::NO_REGISTER
+            false
         ),
         mesh,
         dimensionedScalar("T", dimTemperature, T0)

applications/solvers/combustion/chemFoam/setDeltaT.H

@@ -1,6 +1,5 @@
 if (adjustTimeStep)
 {
-    runTime.setDeltaT(Foam::min(dtChem, maxDeltaT));
-
-    Info<< "deltaT = " <<  runTime.deltaTValue() << endl;
+    runTime.setDeltaT(min(dtChem, maxDeltaT));
+    Info<< "deltaT = " <<  runTime.deltaT().value() << endl;
 }

applications/solvers/combustion/chemFoam/solveChemistry.H

@@ -1,3 +1,3 @@
-dtChem = chemistry.solve(runTime.deltaTValue());
+dtChem = chemistry.solve(runTime.deltaT().value());
 scalar Qdot = chemistry.Qdot()()[0]/rho[0];
-integratedHeat += Qdot*runTime.deltaTValue();
+integratedHeat += Qdot*runTime.deltaT().value();

applications/solvers/combustion/fireFoam/YEEqn.H

@@ -35,7 +35,7 @@ tmp<fv::convectionScheme<scalar>> mvConvection
 
             fvOptions.constrain(YiEqn);
 
-            YiEqn.solve("Yi");
+            YiEqn.solve(mesh.solver("Yi"));
 
             fvOptions.correct(Yi);
 

applications/solvers/combustion/fireFoam/pEqn.H

@@ -36,7 +36,7 @@ while (pimple.correctNonOrthogonal())
       + fvOptions(psi, p_rgh, rho.name())
     );
 
-    p_rghEqn.solve(p_rgh.select(pimple.finalInnerIter()));
+    p_rghEqn.solve(mesh.solver(p_rgh.select(pimple.finalInnerIter())));
 
     if (pimple.finalNonOrthogonalIter())
     {

applications/solvers/combustion/fireFoam/phrghEqn.H

@@ -10,8 +10,7 @@ if (pimple.dict().getOrDefault("hydrostaticInitialization", false))
                 "0",
                 mesh,
                 IOobject::MUST_READ,
-                IOobject::NO_WRITE,
-                IOobject::REGISTER
+                IOobject::NO_WRITE
             ),
             mesh
         )

applications/solvers/combustion/fireFoam/setMultiRegionDeltaT.H

@@ -54,18 +54,9 @@ if (adjustTimeStep)
 
     runTime.setDeltaT
     (
-        Foam::min
+        min
         (
-            dt0
-          * Foam::min
-            (
-                Foam::min
-                (
-                    TFactorFluid,
-                    Foam::min(TFactorFilm, TFactorSolid)
-                ),
-                1.2
-            ),
+            dt0*min(min(TFactorFluid, min(TFactorFilm, TFactorSolid)), 1.2),
             maxDeltaT
         )
     );

applications/solvers/combustion/reactingFoam/EEqn.H

@@ -21,11 +21,6 @@
       + fvOptions(rho, he)
     );
 
-    if (MRF.active())
-    {
-        EEqn += fvc::div(MRF.phi(), p);
-    }
-
     EEqn.relax();
 
     fvOptions.constrain(EEqn);

applications/solvers/combustion/reactingFoam/YEqn.H

@@ -34,7 +34,7 @@ tmp<fv::convectionScheme<scalar>> mvConvection
 
             fvOptions.constrain(YiEqn);
 
-            YiEqn.solve("Yi");
+            YiEqn.solve(mesh.solver("Yi"));
 
             fvOptions.correct(Yi);
 

applications/solvers/combustion/reactingFoam/pEqn.H

@@ -37,7 +37,7 @@ if (pimple.transonic())
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -72,7 +72,7 @@ else
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/combustion/reactingFoam/pcEqn.H

@@ -49,7 +49,7 @@ if (pimple.transonic())
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -89,7 +89,7 @@ else
             fvOptions(psi, p, rho.name())
         );
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/combustion/reactingFoam/rhoReactingBuoyantFoam/pEqn.H

@@ -41,7 +41,7 @@ while (pimple.correctNonOrthogonal())
       - fvm::laplacian(rhorAUf, p_rgh)
     );
 
-    p_rghEqn.solve(p_rgh.select(pimple.finalInnerIter()));
+    p_rghEqn.solve(mesh.solver(p_rgh.select(pimple.finalInnerIter())));
 
     if (pimple.finalNonOrthogonalIter())
     {

applications/solvers/combustion/reactingFoam/setRDeltaT.H

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2013-2016 OpenFOAM Foundation
-    Copyright (C) 2020,2025 OpenCFD Ltd.
+    Copyright (C) 2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -57,23 +57,11 @@ License
     // (relative to reference value)
     scalar alphaY(pimpleDict.getOrDefault<scalar>("alphaY", 1.0));
 
-
-    // The old reciprocal time scale field, with any damping factor
-    tmp<volScalarField> rDeltaT0_damped;
-
-    // Calculate damped value before applying any other changes
-    if
-    (
-        rDeltaTDampingCoeff < 1
-     && runTime.timeIndex() > runTime.startTimeIndex() + 1
-    )
-    {
-        rDeltaT0_damped = (scalar(1) - rDeltaTDampingCoeff)*(rDeltaT);
-    }
-
-
     Info<< "Time scales min/max:" << endl;
 
+    // Cache old reciprocal time scale field
+    volScalarField rDeltaT0("rDeltaT0", rDeltaT);
+
     // Flow time scale
     {
         rDeltaT.ref() =
@@ -82,14 +70,12 @@ License
            /((2*maxCo)*mesh.V()*rho())
         );
 
-        // Limit the largest time scale (=> smallest reciprocal time)
-        rDeltaT.clamp_min(1/maxDeltaT);
-
-        auto limits = gMinMax(rDeltaT.primitiveField());
-        limits.reset(1/(limits.max()+VSMALL), 1/(limits.min()+VSMALL));
+        // Limit the largest time scale
+        rDeltaT.max(1/maxDeltaT);
 
         Info<< "    Flow        = "
-            << limits.min() << ", " << limits.max() << endl;
+            << 1/gMax(rDeltaT.primitiveField()) << ", "
+            << 1/gMin(rDeltaT.primitiveField()) << endl;
     }
 
     // Heat release rate time scale
@@ -100,13 +86,11 @@ License
             mag(Qdot)/(alphaTemp*rho*thermo.Cp()*T)
         );
 
-        rDeltaT.primitiveFieldRef().clamp_min(rDeltaTT);
-
-        auto limits = gMinMax(rDeltaTT.field());
-        limits.reset(1/(limits.max()+VSMALL), 1/(limits.min()+VSMALL));
-
         Info<< "    Temperature = "
-            << limits.min() << ", " << limits.max() << endl;
+            << 1/(gMax(rDeltaTT.field()) + VSMALL) << ", "
+            << 1/(gMin(rDeltaTT.field()) + VSMALL) << endl;
+
+        rDeltaT.ref() = max(rDeltaT(), rDeltaTT);
     }
 
     // Reaction rate time scale
@@ -154,13 +138,11 @@ License
 
         if (foundY)
         {
-            rDeltaT.primitiveFieldRef().clamp_min(rDeltaTY);
-
-            auto limits = gMinMax(rDeltaTY.field());
-            limits.reset(1/(limits.max()+VSMALL), 1/(limits.min()+VSMALL));
-
             Info<< "    Composition = "
-                << limits.min() << ", " << limits.max() << endl;
+                << 1/(gMax(rDeltaTY.field()) + VSMALL) << ", "
+                << 1/(gMin(rDeltaTY.field()) + VSMALL) << endl;
+
+            rDeltaT.ref() = max(rDeltaT(), rDeltaTY);
         }
         else
         {
@@ -179,22 +161,28 @@ License
         fvc::smooth(rDeltaT, rDeltaTSmoothingCoeff);
     }
 
-    // Limit rate of change of time scale (=> smallest reciprocal time)
+    // Limit rate of change of time scale
     // - reduce as much as required
     // - only increase at a fraction of old time scale
-    if (rDeltaT0_damped)
+    if
+    (
+        rDeltaTDampingCoeff < 1
+     && runTime.timeIndex() > runTime.startTimeIndex() + 1
+    )
     {
-        rDeltaT.clamp_min(rDeltaT0_damped());
+        rDeltaT = max
+        (
+            rDeltaT,
+            (scalar(1) - rDeltaTDampingCoeff)*rDeltaT0
+        );
     }
 
     // Update tho boundary values of the reciprocal time-step
     rDeltaT.correctBoundaryConditions();
 
-    auto limits = gMinMax(rDeltaT.field());
-    limits.reset(1/(limits.max()+VSMALL), 1/(limits.min()+VSMALL));
-
     Info<< "    Overall     = "
-        << limits.min() << ", " << limits.max() << endl;
+        << 1/gMax(rDeltaT.primitiveField())
+        << ", " << 1/gMin(rDeltaT.primitiveField()) << endl;
 }
 
 

applications/solvers/compressible/rhoCentralFoam/BCs/T/smoluchowskiJumpTFvPatchScalarField.C

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2015 OpenFOAM Foundation
-    Copyright (C) 2020,2025 OpenCFD Ltd.
+    Copyright (C) 2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -103,10 +103,16 @@ Foam::smoluchowskiJumpTFvPatchScalarField::smoluchowskiJumpTFvPatchScalarField
             << exit(FatalIOError);
     }
 
-    if (!this->readValueEntry(dict))
+    if (dict.found("value"))
     {
-        // Fallback: set to the internal field
-        this->extrapolateInternal();
+        fvPatchField<scalar>::operator=
+        (
+            scalarField("value", dict, p.size())
+        );
+    }
+    else
+    {
+        fvPatchField<scalar>::operator=(patchInternalField());
     }
 
     refValue() = *this;

applications/solvers/compressible/rhoCentralFoam/BCs/T/smoluchowskiJumpTFvPatchScalarField.H

@@ -110,6 +110,15 @@ public:
             const fvPatchFieldMapper&
         );
 
+        //- Construct and return a clone
+        virtual tmp<fvPatchScalarField> clone() const
+        {
+            return tmp<fvPatchScalarField>
+            (
+                new smoluchowskiJumpTFvPatchScalarField(*this)
+            );
+        }
+
         //- Construct as copy setting internal field reference
         smoluchowskiJumpTFvPatchScalarField
         (
@@ -117,22 +126,18 @@ public:
             const DimensionedField<scalar, volMesh>&
         );
 
-        //- Return a clone
-        virtual tmp<fvPatchField<scalar>> clone() const
-        {
-            return fvPatchField<scalar>::Clone(*this);
-        }
-
-        //- Clone with an internal field reference
-        virtual tmp<fvPatchField<scalar>> clone
+        //- Construct and return a clone setting internal field reference
+        virtual tmp<fvPatchScalarField> clone
         (
             const DimensionedField<scalar, volMesh>& iF
         ) const
         {
-            return fvPatchField<scalar>::Clone(*this, iF);
+            return tmp<fvPatchScalarField>
+            (
+                new smoluchowskiJumpTFvPatchScalarField(*this, iF)
+            );
         }
 
-
         // Mapping functions
 
             //- Map (and resize as needed) from self given a mapping object

applications/solvers/compressible/rhoCentralFoam/BCs/U/maxwellSlipUFvPatchVectorField.C

@@ -105,15 +105,18 @@ Foam::maxwellSlipUFvPatchVectorField::maxwellSlipUFvPatchVectorField
             << exit(FatalIOError);
     }
 
-    if (this->readValueEntry(dict))
+    if (dict.found("value"))
     {
-        const auto* hasRefValue = dict.findEntry("refValue", keyType::LITERAL);
-        const auto* hasFrac = dict.findEntry("valueFraction", keyType::LITERAL);
+        fvPatchField<vector>::operator=
+        (
+            vectorField("value", dict, p.size())
+        );
 
-        if (hasRefValue && hasFrac)
+        if (dict.found("refValue") && dict.found("valueFraction"))
         {
-            this->refValue().assign(*hasRefValue, p.size());
-            this->valueFraction().assign(*hasFrac, p.size());
+            this->refValue() = vectorField("refValue", dict, p.size());
+            this->valueFraction() =
+                scalarField("valueFraction", dict, p.size());
         }
         else
         {

applications/solvers/compressible/rhoCentralFoam/BCs/U/maxwellSlipUFvPatchVectorField.H

@@ -118,6 +118,15 @@ public:
             const fvPatchFieldMapper&
         );
 
+        //- Construct and return a clone
+        virtual tmp<fvPatchVectorField> clone() const
+        {
+            return tmp<fvPatchVectorField>
+            (
+                new maxwellSlipUFvPatchVectorField(*this)
+            );
+        }
+
         //- Construct as copy setting internal field reference
         maxwellSlipUFvPatchVectorField
         (
@@ -125,19 +134,16 @@ public:
             const DimensionedField<vector, volMesh>&
         );
 
-        //- Return a clone
-        virtual tmp<fvPatchField<vector>> clone() const
-        {
-            return fvPatchField<vector>::Clone(*this);
-        }
-
-        //- Clone with an internal field reference
-        virtual tmp<fvPatchField<vector>> clone
+        //- Construct and return a clone setting internal field reference
+        virtual tmp<fvPatchVectorField> clone
         (
             const DimensionedField<vector, volMesh>& iF
         ) const
         {
-            return fvPatchField<vector>::Clone(*this, iF);
+            return tmp<fvPatchVectorField>
+            (
+                new maxwellSlipUFvPatchVectorField(*this, iF)
+            );
         }
 
 

applications/solvers/compressible/rhoCentralFoam/BCs/rho/fixedRhoFvPatchScalarField.H

@@ -135,6 +135,15 @@ public:
             const fixedRhoFvPatchScalarField&
         );
 
+        //- Construct and return a clone
+        virtual tmp<fvPatchScalarField> clone() const
+        {
+            return tmp<fvPatchScalarField>
+            (
+                new fixedRhoFvPatchScalarField(*this)
+            );
+        }
+
         //- Construct as copy setting internal field reference
         fixedRhoFvPatchScalarField
         (
@@ -142,19 +151,16 @@ public:
             const DimensionedField<scalar, volMesh>&
         );
 
-        //- Return a clone
-        virtual tmp<fvPatchField<scalar>> clone() const
-        {
-            return fvPatchField<scalar>::Clone(*this);
-        }
-
-        //- Clone with an internal field reference
-        virtual tmp<fvPatchField<scalar>> clone
+        //- Construct and return a clone setting internal field reference
+        virtual tmp<fvPatchScalarField> clone
         (
             const DimensionedField<scalar, volMesh>& iF
         ) const
         {
-            return fvPatchField<scalar>::Clone(*this, iF);
+            return tmp<fvPatchScalarField>
+            (
+                new fixedRhoFvPatchScalarField(*this, iF)
+            );
         }
 
 

applications/solvers/compressible/rhoCentralFoam/createFieldRefs.H

@@ -1,9 +1,10 @@
 volScalarField& p = thermo.p();
 const volScalarField& T = thermo.T();
 const volScalarField& psi = thermo.psi();
+const volScalarField& mu = thermo.mu();
 
 bool inviscid(true);
-if (max(thermo.mu().cref().primitiveField()) > 0.0)
+if (max(mu.primitiveField()) > 0.0)
 {
     inviscid = false;
 }

applications/solvers/compressible/rhoCentralFoam/directionInterpolate.H

@@ -17,7 +17,7 @@ tmp<GeometricField<Type, fvsPatchField, surfaceMesh>> interpolate
             vf,
             dir,
             "reconstruct("
-          + (reconFieldName.empty() ? vf.name() : reconFieldName)
+          + (reconFieldName != word::null ? reconFieldName : vf.name())
           + ')'
         )
     );

applications/solvers/compressible/rhoCentralFoam/setRDeltaT.H

@@ -23,11 +23,7 @@
 
     fvc::smooth(rDeltaT, rDeltaTSmoothingCoeff);
 
-    {
-        auto limits = gMinMax(rDeltaT.primitiveField());
-        limits.reset(1/(limits.max()+VSMALL), 1/(limits.min()+VSMALL));
-
-        Info<< "Flow time scale min/max = "
-            << limits.min() << ", " << limits.max() << endl;
-    }
+    Info<< "Flow time scale min/max = "
+        << gMin(1/rDeltaT.primitiveField())
+        << ", " << gMax(1/rDeltaT.primitiveField()) << endl;
 }

applications/solvers/compressible/rhoPimpleAdiabaticFoam/pEqn.H

@@ -63,7 +63,7 @@
                 fvOptions(psi, p, rho.name())
             );
 
-            pEqn.solve(p.select(pimple.finalInnerIter()));
+            pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
             // Rhie & Chow interpolation (part 2)
             if (pimple.finalNonOrthogonalIter())

applications/solvers/compressible/rhoPimpleFoam/EEqn.H

@@ -20,11 +20,6 @@
         fvOptions(rho, he)
     );
 
-    if (MRF.active())
-    {
-        EEqn += fvc::div(MRF.phi(), p);
-    }
-
     EEqn.relax();
 
     fvOptions.constrain(EEqn);

applications/solvers/compressible/rhoPimpleFoam/overRhoPimpleDyMFoam/correctPhi.H

@@ -29,7 +29,7 @@ if (mesh.changing())
     wordList pcorrTypes
     (
         p.boundaryField().size(),
-        fvPatchFieldBase::zeroGradientType()
+        zeroGradientFvPatchScalarField::typeName
     );
 
     // Set BCs of pcorr to fixed-value for patches at which p is fixed
@@ -72,7 +72,7 @@ if (mesh.changing())
             divrhoU()
         );
 
-        pcorrEqn.solve(pcorr.select(pimple.finalInnerIter()));
+        pcorrEqn.solve(mesh.solver(pcorr.select(pimple.finalInnerIter())));
         //Bypass virtual layer
         //mesh.fvMesh::solve(pcorrEqn, d);
 

applications/solvers/compressible/rhoPimpleFoam/overRhoPimpleDyMFoam/pEqn.H

@@ -56,7 +56,7 @@ if (pimple.transonic())
         // Relax the pressure equation to ensure diagonal-dominance
         pEqn.relax();
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -78,7 +78,7 @@ else
     {
         fvScalarMatrix pEqn(pDDtEqn - fvm::laplacian(rhorAUf, p));
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/compressible/rhoPimpleFoam/pEqn.H

@@ -54,7 +54,7 @@ if (pimple.transonic())
         // Relax the pressure equation to ensure diagonal-dominance
         pEqn.relax();
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -76,7 +76,7 @@ else
     {
         fvScalarMatrix pEqn(pDDtEqn - fvm::laplacian(rhorAUf, p));
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/compressible/rhoPimpleFoam/pcEqn.H

@@ -65,7 +65,7 @@ if (pimple.transonic())
         // Relax the pressure equation to ensure diagonal-dominance
         pEqn.relax();
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {
@@ -90,7 +90,7 @@ else
     {
         fvScalarMatrix pEqn(pDDtEqn - fvm::laplacian(rhorAtU, p));
 
-        pEqn.solve(p.select(pimple.finalInnerIter()));
+        pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/compressible/rhoPimpleFoam/setRDeltaT.H

@@ -52,26 +52,18 @@
     // Update the boundary values of the reciprocal time-step
     rDeltaT.correctBoundaryConditions();
 
-    {
-        auto limits = gMinMax(rDeltaT.primitiveField());
-        limits.reset(1/(limits.max()+VSMALL), 1/(limits.min()+VSMALL));
-
-        Info<< "Flow time scale min/max = "
-            << limits.min() << ", " << limits.max() << endl;
-    }
+    Info<< "Flow time scale min/max = "
+        << gMin(1/rDeltaT.primitiveField())
+        << ", " << gMax(1/rDeltaT.primitiveField()) << endl;
 
     if (rDeltaTSmoothingCoeff < 1.0)
     {
         fvc::smooth(rDeltaT, rDeltaTSmoothingCoeff);
     }
 
-    {
-        auto limits = gMinMax(rDeltaT.primitiveField());
-        limits.reset(1/(limits.max()+VSMALL), 1/(limits.min()+VSMALL));
-
-        Info<< "Smoothed flow time scale min/max = "
-            << limits.min() << ", " << limits.max() << endl;
-    }
+    Info<< "Smoothed flow time scale min/max = "
+        << gMin(1/rDeltaT.primitiveField())
+        << ", " << gMax(1/rDeltaT.primitiveField()) << endl;
 
     // Limit rate of change of time scale
     // - reduce as much as required
@@ -86,10 +78,8 @@
             rDeltaT0
            *max(rDeltaT/rDeltaT0, scalar(1) - rDeltaTDampingCoeff);
 
-        auto limits = gMinMax(rDeltaT.primitiveField());
-        limits.reset(1/(limits.max()+VSMALL), 1/(limits.min()+VSMALL));
-
         Info<< "Damped flow time scale min/max = "
-            << limits.min() << ", " << limits.max() << endl;
+            << gMin(1/rDeltaT.primitiveField())
+            << ", " << gMax(1/rDeltaT.primitiveField()) << endl;
     }
 }

applications/solvers/compressible/rhoSimpleFoam/EEqn.H

@@ -14,11 +14,6 @@
         fvOptions(rho, he)
     );
 
-    if (MRF.active())
-    {
-        EEqn += fvc::div(MRF.phi(), p);
-    }
-
     EEqn.relax();
 
     fvOptions.constrain(EEqn);

applications/solvers/compressible/sonicFoam/EEqn.H

@@ -9,11 +9,6 @@
         fvOptions(rho, e)
     );
 
-    if (MRF.active())
-    {
-        EEqn += fvc::div(MRF.phi(), p);
-    }
-
     EEqn.relax();
 
     fvOptions.constrain(EEqn);

applications/solvers/electromagnetics/mhdFoam/mhdFoam.C

@@ -127,7 +127,7 @@ int main(int argc, char *argv[])
                     );
 
                     pEqn.setReference(pRefCell, pRefValue);
-                    pEqn.solve(p.select(piso.finalInnerIter()));
+                    pEqn.solve(mesh.solver(p.select(piso.finalInnerIter())));
 
                     if (piso.finalNonOrthogonalIter())
                     {
@@ -167,7 +167,7 @@ int main(int argc, char *argv[])
                     fvm::laplacian(rABf, pB) == fvc::div(phiB)
                 );
 
-                pBEqn.solve(pB.select(bpiso.finalInnerIter()));
+                pBEqn.solve(mesh.solver(pB.select(bpiso.finalInnerIter())));
 
                 if (bpiso.finalNonOrthogonalIter())
                 {

applications/solvers/finiteArea/liquidFilmFoam/capillaryCourantNo.H

@@ -7,7 +7,7 @@
             *mag(aMesh.edgeInterpolation::deltaCoeffs())
             /rhol
         )
-    ).value()*runTime.deltaTValue();
+    ).value()*runTime.deltaT().value();
 
     Info<< "Max Capillary Courant Number = " << CoNumSigma << '\n' << endl;
 }

applications/solvers/finiteArea/liquidFilmFoam/createFaFields.H

@@ -5,7 +5,7 @@
         (
             "h",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::MUST_READ,
             IOobject::AUTO_WRITE
         ),
@@ -20,7 +20,7 @@
         (
             "Us",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::MUST_READ,
             IOobject::AUTO_WRITE
         ),
@@ -34,7 +34,7 @@
         (
             "phis",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::AUTO_WRITE
         ),
@@ -48,7 +48,7 @@
         (
             "phi2s",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::AUTO_WRITE
         ),
@@ -67,7 +67,7 @@
         (
             "Sm",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE
         ),
@@ -82,7 +82,7 @@
         (
             "Sd",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE
         ),
@@ -96,7 +96,7 @@
         (
             "Sg",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE
         ),
@@ -112,7 +112,7 @@
         (
             "ps",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::AUTO_WRITE
         ),
@@ -134,7 +134,7 @@
         (
             "manningField",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::MUST_READ,
             IOobject::AUTO_WRITE
         ),
@@ -147,7 +147,7 @@
         (
             "frictionFactor",
             runTime.timeName(),
-            aMesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE
         ),

applications/solvers/finiteArea/liquidFilmFoam/createFvFields.H

@@ -7,7 +7,7 @@ volVectorField U
     (
         "U",
         runTime.timeName(),
-        mesh.thisDb(),
+        mesh,
         IOobject::NO_READ,
         IOobject::AUTO_WRITE
     ),
@@ -22,7 +22,7 @@ volScalarField H
     (
         "H",
         runTime.timeName(),
-        mesh.thisDb(),
+        mesh,
         IOobject::NO_READ,
         IOobject::AUTO_WRITE
     ),

applications/solvers/finiteArea/liquidFilmFoam/liquidFilmFoam.C

@@ -87,13 +87,7 @@ int main(int argc, char *argv[])
             (
                 fam::ddt(h, Us)
               + fam::div(phi2s, Us)
-              + fam::Sp
-                (
-                    0.0125
-                   *frictionFactor.internalField()
-                   *mag(Us.internalField()),
-                    Us
-                )
+              + fam::Sp(0.0125*frictionFactor*mag(Us), Us)
              ==
                 Gs*h
               - fam::Sp(Sd, Us)

applications/solvers/finiteArea/liquidFilmFoam/surfaceCourantNo.H

@@ -47,10 +47,10 @@ if (aMesh.nInternalEdges())
     );
 
     CoNum = max(SfUfbyDelta/aMesh.magLe())
-        .value()*runTime.deltaTValue();
+        .value()*runTime.deltaT().value();
 
     meanCoNum = (sum(SfUfbyDelta)/sum(aMesh.magLe()))
-        .value()*runTime.deltaTValue();
+        .value()*runTime.deltaT().value();
 
     velMag = max(mag(phis)/aMesh.magLe()).value();
 }

applications/solvers/finiteArea/sphereSurfactantFoam/createFaFields.H

@@ -5,7 +5,7 @@ areaScalarField Cs
     (
         "Cs",
         runTime.timeName(),
-        aMesh.thisDb(),
+        mesh,
         IOobject::MUST_READ,
         IOobject::AUTO_WRITE
     ),
@@ -26,7 +26,7 @@ areaVectorField Us
     (
         "Us",
         runTime.timeName(),
-        aMesh.thisDb(),
+        mesh,
         IOobject::NO_READ,
         IOobject::NO_WRITE
     ),
@@ -47,7 +47,6 @@ forAll(Us, faceI)
     Us[faceI].z() =
         Uinf.value()*0.25*R[faceI].x()*R[faceI].z()/sqr(mag(R[faceI]));
 }
-Us.boundaryFieldRef().evaluateCoupled<coupledFaPatch>();
 
 Us -= aMesh.faceAreaNormals()*(aMesh.faceAreaNormals() & Us);
 
@@ -58,7 +57,7 @@ edgeScalarField phis
     (
         "phis",
         runTime.timeName(),
-        aMesh.thisDb(),
+        mesh,
         IOobject::NO_READ,
         IOobject::NO_WRITE
     ),

applications/solvers/finiteArea/sphereSurfactantFoam/createFaMesh.H

@@ -0,0 +1,2 @@
+    // Create Finite Area mesh
+    faMesh aMesh(mesh);

applications/solvers/finiteArea/sphereSurfactantFoam/createVolFields.H

@@ -7,7 +7,7 @@
         (
             "Cvf",
             runTime.timeName(),
-            mesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::AUTO_WRITE
         ),
@@ -24,7 +24,7 @@
         (
             "U",
             runTime.timeName(),
-            mesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::AUTO_WRITE
         ),

applications/solvers/finiteArea/surfactantFoam/createFaFields.H

@@ -5,7 +5,7 @@ areaScalarField Cs
     (
         "Cs",
         runTime.timeName(),
-        aMesh.thisDb(),
+        mesh,
         IOobject::MUST_READ,
         IOobject::AUTO_WRITE
     ),
@@ -37,7 +37,7 @@ areaVectorField Us
     (
         "Us",
         runTime.timeName(),
-        aMesh.thisDb(),
+        mesh,
         IOobject::MUST_READ,
         IOobject::NO_WRITE
     ),
@@ -51,7 +51,7 @@ edgeScalarField phis
     (
         "phis",
         runTime.timeName(),
-        aMesh.thisDb(),
+        mesh,
         IOobject::NO_READ,
         IOobject::NO_WRITE
     ),

applications/solvers/finiteArea/surfactantFoam/createFaMesh.H

@@ -0,0 +1,2 @@
+    // Create Finite Area mesh
+    faMesh aMesh(mesh);

applications/solvers/finiteArea/surfactantFoam/createVolFields.H

@@ -7,7 +7,7 @@
         (
             "Cvf",
             runTime.timeName(),
-            mesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::AUTO_WRITE
         ),
@@ -24,7 +24,7 @@
         (
             "U",
             runTime.timeName(),
-            mesh.thisDb(),
+            mesh,
             IOobject::NO_READ,
             IOobject::AUTO_WRITE
         ),

applications/solvers/heatTransfer/buoyantBoussinesqPimpleFoam/pEqn.H

@@ -27,7 +27,7 @@
 
         p_rghEqn.setReference(pRefCell, getRefCellValue(p_rgh, pRefCell));
 
-        p_rghEqn.solve(p_rgh.select(pimple.finalInnerIter()));
+        p_rghEqn.solve(mesh.solver(p_rgh.select(pimple.finalInnerIter())));
 
         if (pimple.finalNonOrthogonalIter())
         {

applications/solvers/heatTransfer/buoyantPimpleFoam/overBuoyantPimpleDyMFoam/correctPhi.H

@@ -29,7 +29,7 @@ if (mesh.changing())
     wordList pcorrTypes
     (
         p.boundaryField().size(),
-        fvPatchFieldBase::zeroGradientType()
+        zeroGradientFvPatchScalarField::typeName
     );
 
     // Set BCs of pcorr to fixed-value for patches at which p is fixed
@@ -72,7 +72,7 @@ if (mesh.changing())
             divrhoU()
         );
 
-        //pcorrEqn.solve(pcorr.select(pimple.finalInnerIter()));
+        //pcorrEqn.solve(mesh.solver(pcorr.select(pimple.finalInnerIter())));
         //Bypass virtual layer
         const dictionary& d = mesh.solver
             (

applications/solvers/heatTransfer/buoyantPimpleFoam/overBuoyantPimpleDyMFoam/pEqn.H

@@ -50,7 +50,7 @@ while (pimple.correctNonOrthogonal())
       - fvm::laplacian(rhorAUf, p_rgh)
     );
 
-    p_rghEqn.solve(p_rgh.select(pimple.finalInnerIter()));
+    p_rghEqn.solve(mesh.solver(p_rgh.select(pimple.finalInnerIter())));
 
     if (pimple.finalNonOrthogonalIter())
     {

applications/solvers/heatTransfer/buoyantPimpleFoam/pEqn.H

@@ -52,7 +52,7 @@ while (pimple.correctNonOrthogonal())
         compressible ? getRefCellValue(p_rgh, pRefCell) : pRefValue
     );
 
-    p_rghEqn.solve(p_rgh.select(pimple.finalInnerIter()));
+    p_rghEqn.solve(mesh.solver(p_rgh.select(pimple.finalInnerIter())));
 
     if (pimple.finalNonOrthogonalIter())
     {

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionSimpleFoam/fluid/compressibleMultiRegionCourantNo.H

@@ -1,7 +1,7 @@
     scalar CoNum = -GREAT;
     forAll(fluidRegions, regionI)
     {
-        CoNum = Foam::max
+        CoNum = max
         (
             compressibleCourantNo
             (

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionSimpleFoam/fluid/createFluidFields.H

@@ -108,7 +108,7 @@ forAll(fluidRegions, i)
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE
             ),
-            dimensionedScalar(word::null, dimLength, Zero)
+            dimensionedScalar("hRef", dimLength, Zero) // uses name
         )
     );
 

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionSimpleFoam/fluid/pEqn.H

@@ -78,8 +78,8 @@
     }
 
     rho = thermo.rho();
-
-    rho.clamp_range(rhoMin[i], rhoMax[i]);
+    rho = max(rho, rhoMin[i]);
+    rho = min(rho, rhoMax[i]);
     rho.relax();
 
     Info<< "Min/max rho:" << min(rho).value() << ' '

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/Make/files

@@ -1,5 +1,5 @@
 derivedFvPatchFields/turbulentTemperatureTwoPhaseRadCoupledMixed/turbulentTemperatureTwoPhaseRadCoupledMixedFvPatchScalarField.C
-solid/solidRegionDiffNo.C
+../solid/solidRegionDiffNo.C
 chtMultiRegionTwoPhaseEulerFoam.C
 
 EXE = $(FOAM_APPBIN)/chtMultiRegionTwoPhaseEulerFoam

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/derivedFvPatchFields/turbulentTemperatureTwoPhaseRadCoupledMixed/turbulentTemperatureTwoPhaseRadCoupledMixedFvPatchScalarField.C

@@ -243,12 +243,14 @@ turbulentTemperatureTwoPhaseRadCoupledMixedFvPatchScalarField
             << exit(FatalError);
     }
 
+    fvPatchScalarField::operator=(scalarField("value", dict, p.size()));
 
-    this->readValueEntry(dict, IOobjectOption::MUST_READ);
-
-    if (this->readMixedEntries(dict))
+    if (dict.found("refValue"))
     {
         // Full restart
+        refValue() = scalarField("refValue", dict, p.size());
+        refGrad() = scalarField("refGradient", dict, p.size());
+        valueFraction() = scalarField("valueFraction", dict, p.size());
     }
     else
     {
@@ -292,7 +294,8 @@ updateCoeffs()
 
     // Since we're inside initEvaluate/evaluate there might be processor
     // comms underway. Change the tag we use.
-    const int oldTag = UPstream::incrMsgType();
+    int oldTag = UPstream::msgType();
+    UPstream::msgType() = oldTag+1;
 
     // Get the coupling information from the mappedPatchBase
     const label patchi = patch().index();
@@ -387,18 +390,15 @@ updateCoeffs()
         {
             scalar Q = gSum(kappa(Tp)*patch().magSf()*snGrad());
 
-            auto limits = gMinMax(Tp);
-            auto avg = gAverage(Tp);
+                Info<< "T solid : " << nl << endl;
 
-            Info<< "T solid : " << nl << endl;
-
-            Info
-                << " heat transfer rate from solid:" << Q
-                << " walltemperature "
-                << " min:" << limits.min()
-                << " max:" << limits.max()
-                << " avg:" << avg << nl
-                << endl;
+                Info
+                    << " heat transfer rate from solid:" << Q
+                    << " walltemperature "
+                    << " min:" << gMin(Tp)
+                    << " max:" << gMax(Tp)
+                    << " avg:" << gAverage(Tp) << nl
+                    << endl;
         }
     }
     else if (regionType_ == fluid)
@@ -448,16 +448,10 @@ updateCoeffs()
             scalarField qLiq((Tp - Tc)*KdeltaLiq);
             scalarField qVap((Tp - Tv.patchInternalField())*KdeltaVap);
 
-            auto infoT = gMinMax(Tp);
-            auto avgT = gAverage(Tp);
-
-            auto infoLiq = gMinMax(qLiq);
-            auto infoVap = gMinMax(qVap);
-
             Info<< "T flow : " << nl << endl;
 
-            Info<< "  qLiq: " << infoLiq.min() << " - " << infoLiq.max() << nl
-                << "  qVap: " << infoVap.min() << " - " << infoVap.max() << nl;
+            Info<< "  qLiq: " << gMin(qLiq) << " - " << gMax(qLiq) << endl;
+            Info<< "  qVap: " << gMin(qVap) << " - " << gMax(qVap) << endl;
 
             scalar QLiq = gSum(qLiq*patch().magSf());
             scalar QVap = gSum(qVap*patch().magSf());
@@ -466,9 +460,9 @@ updateCoeffs()
             Info<<  " Heat transfer to Vap: " << QVap << endl;
 
             Info<< " walltemperature "
-                << " min:" << infoT.min()
-                << " max:" << infoT.max()
-                << " avg:" << avgT
+                << " min:" << gMin(Tp)
+                << " max:" << gMax(Tp)
+                << " avg:" << gAverage(Tp)
                 << endl;
         }
     }
@@ -479,9 +473,10 @@ updateCoeffs()
             << regionTypeNames_ << nl << exit(FatalError);
     }
 
-    UPstream::msgType(oldTag);  // Restore tag
-
     mixedFvPatchScalarField::updateCoeffs();
+
+    // Restore tag
+    UPstream::msgType() = oldTag;
 }
 
 

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/derivedFvPatchFields/turbulentTemperatureTwoPhaseRadCoupledMixed/turbulentTemperatureTwoPhaseRadCoupledMixedFvPatchScalarField.H

@@ -196,6 +196,18 @@ public:
             const fvPatchFieldMapper&
         );
 
+        //- Construct and return a clone
+        virtual tmp<fvPatchScalarField> clone() const
+        {
+            return tmp<fvPatchScalarField>
+            (
+                new turbulentTemperatureTwoPhaseRadCoupledMixedFvPatchScalarField
+                (
+                    *this
+                )
+            );
+        }
+
         //- Construct as copy setting internal field reference
         turbulentTemperatureTwoPhaseRadCoupledMixedFvPatchScalarField
         (
@@ -203,19 +215,20 @@ public:
             const DimensionedField<scalar, volMesh>&
         );
 
-        //- Return a clone
-        virtual tmp<fvPatchField<scalar>> clone() const
-        {
-            return fvPatchField<scalar>::Clone(*this);
-        }
-
-        //- Clone with an internal field reference
-        virtual tmp<fvPatchField<scalar>> clone
+        //- Construct and return a clone setting internal field reference
+        virtual tmp<fvPatchScalarField> clone
         (
             const DimensionedField<scalar, volMesh>& iF
         ) const
         {
-            return fvPatchField<scalar>::Clone(*this, iF);
+            return tmp<fvPatchScalarField>
+            (
+                new turbulentTemperatureTwoPhaseRadCoupledMixedFvPatchScalarField
+                (
+                    *this,
+                    iF
+                )
+            );
         }
 
 

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/fluid/compressibleMultiRegionCourantNo.H

@@ -31,7 +31,7 @@
             );
 
 
-            scalar regionCoNum =
+            CoNum =
                 0.5*gMax
                 (
                     sumPhi/fluidRegions[regioni].V().field()
@@ -41,9 +41,9 @@
             (
                 fvc::surfaceSum(mag(phi1 - phi2))().primitiveField()
               / fluidRegions[regioni].V().field()
-            )*runTime.deltaTValue();
+            )*runTime.deltaTValue(),
 
-            CoNum = Foam::max(CoNum, Foam::max(regionCoNum, UrCoNum));
+            CoNum = max(UrCoNum, CoNum);
         }
     }
 

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/fluid/createFluidFields.H

@@ -221,7 +221,7 @@ forAll(fluidRegions, i)
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE
             ),
-            dimensionedScalar(word::null, dimLength, Zero)
+            dimensionedScalar("hRef", dimLength, Zero)
         )
     );
 

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/fluid/initContinuityErrs.H

@@ -13,11 +13,11 @@ forAll(cumulativeContErrIO, i)
                 "cumulativeContErr",
                 runTime.timeName(),
                 "uniform",
-                mesh.thisDb(),
+                mesh,
                 IOobject::READ_IF_PRESENT,
                 IOobject::AUTO_WRITE
             ),
-            dimensionedScalar(word::null, dimless, Zero)
+            dimensionedScalar(dimless, Zero)
         )
     );
 }

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/fluid/setRegionFluidFields.H

@@ -8,13 +8,11 @@
 
     volVectorField& U1 = phase1.URef();
     surfaceScalarField& phi1 = phase1.phiRef();
-    const tmp<surfaceScalarField> talphaPhi1 = phase1.alphaPhi();
-    const auto& alphaPhi1 = talphaPhi1();
+    const surfaceScalarField& alphaPhi1 = phase1.alphaPhi();
 
     volVectorField& U2 = phase2.URef();
     surfaceScalarField& phi2 = phase2.phiRef();
-    const tmp<surfaceScalarField> talphaPhi2 = phase2.alphaPhi();
-    const auto& alphaPhi2 = talphaPhi2();
+    const surfaceScalarField& alphaPhi2 = phase2.alphaPhi();
 
     surfaceScalarField& phi = fluid.phi();
 

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/fluid/solveFluid.H

@@ -1,6 +1,6 @@
 if (finalIter)
 {
-    mesh.data().setFinalIteration(true);
+    mesh.data::add("finalIteration", true);
 }
 
 if (frozenFlow)
@@ -35,5 +35,5 @@ else
 
 if (finalIter)
 {
-    mesh.data().setFinalIteration(false);
+    mesh.data::remove("finalIteration");
 }

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/solid/solidRegionDiffNo.C

@@ -1 +0,0 @@
-../../solid/solidRegionDiffNo.C

applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionTwoPhaseEulerFoam/solid/solveSolid.H

@@ -1,6 +1,6 @@
 if (finalIter)
 {
-    mesh.data().setFinalIteration(true);
+    mesh.data::add("finalIteration", true);
 }
 
 {
@@ -22,7 +22,7 @@ if (finalIter)
 
         fvOptions.constrain(hEqn);
 
-        hEqn.solve(h.select(finalIter));
+        hEqn.solve(mesh.solver(h.select(finalIter)));
 
         fvOptions.correct(h);
     }
@@ -35,5 +35,5 @@ if (finalIter)
 
 if (finalIter)
 {
-    mesh.data().setFinalIteration(false);
+    mesh.data::remove("finalIteration");
 }

applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/EEqn.H

@@ -33,7 +33,7 @@
     }
     else
     {
-        EEqn.solve(he.select(finalIter));
+        EEqn.solve(mesh.solver(he.select(finalIter)));
         fvOptions.correct(he);
 
         thermo.correct();

applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/UEqn.H

@@ -28,7 +28,7 @@
                   - fvc::snGrad(p_rgh)
                 )*mesh.magSf()
             ),
-            U.select(finalIter)
+            mesh.solver(U.select(finalIter))
         );
 
         fvOptions.correct(U);

applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/YEqn.H

@@ -44,7 +44,7 @@ if (Y.size())
 
             fvOptions.constrain(YiEqn);
 
-            YiEqn.solve("Yi");
+            YiEqn.solve(mesh.solver("Yi"));
 
             fvOptions.correct(Yi);
 

applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/compressibleMultiRegionCourantNo.H

@@ -2,7 +2,7 @@
 
     forAll(fluidRegions, regioni)
     {
-        CoNum = Foam::max
+        CoNum = max
         (
             compressibleCourantNo
             (
@@ -17,7 +17,7 @@
 /*
     forAll(porousFluidRegions, porousi)
     {
-        CoNum = Foam::max
+        CoNum = max
         (
             compressibleCourantNo
             (

applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/createFluidFields.H

@@ -112,7 +112,7 @@ forAll(fluidRegions, i)
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE
             ),
-            dimensionedScalar(word::null, dimLength, Zero)
+            dimensionedScalar("hRef", dimLength, Zero) // uses name
         )
     );
 

applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/initContinuityErrs.H

@@ -13,11 +13,11 @@ forAll(cumulativeContErrIO, i)
                 "cumulativeContErr",
                 runTime.timeName(),
                 "uniform",
-                mesh.thisDb(),
+                mesh,
                 IOobject::READ_IF_PRESENT,
                 IOobject::AUTO_WRITE
             ),
-            dimensionedScalar(word::null, dimless, Zero)
+            dimensionedScalar(dimless, Zero)
         )
     );
 }

applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/pEqn.H

@@ -52,12 +52,15 @@ constrainPressure(p_rgh, rho, U, phiHbyA, rhorAUf, MRF);
 
         p_rghEqn.solve
         (
-            p_rgh.select
+            mesh.solver
             (
+                p_rgh.select
                 (
-                    oCorr == nOuterCorr-1
-                 && corr == nCorr-1
-                 && nonOrth == nNonOrthCorr
+                    (
+                        oCorr == nOuterCorr-1
+                     && corr == nCorr-1
+                     && nonOrth == nNonOrthCorr
+                    )
                 )
             )
         );

applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/solveFluid.H

@@ -1,6 +1,6 @@
 if (finalIter)
 {
-    mesh.data().setFinalIteration(true);
+    mesh.data::add("finalIteration", true);
 }
 
 if (frozenFlow)
@@ -36,5 +36,5 @@ else
 
 if (finalIter)
 {
-    mesh.data().setFinalIteration(false);
+    mesh.data::remove("finalIteration");
 }

applications/solvers/heatTransfer/chtMultiRegionFoam/include/createCoupledRegions.H

@@ -1,8 +1,6 @@
-bool coupled = false;
-{
-    fvSolution solutionDict(runTime);
-    solutionDict.readIfPresent("coupledEnergyField", coupled);
-}
+fvSolution solutionDict(runTime);
+
+bool coupled(solutionDict.getOrDefault("coupledEnergyField", false));
 
 autoPtr<fvMatrix<scalar>> fvMatrixAssemblyPtr;
 

applications/solvers/heatTransfer/chtMultiRegionFoam/include/setInitialMultiRegionDeltaT.H

@@ -47,13 +47,13 @@ if (adjustTimeStep)
 
         runTime.setDeltaT
         (
-            Foam::min
+            min
             (
-                Foam::min(maxCo/CoNum, maxDi/DiNum)*runTime.deltaTValue(),
-                Foam::min(runTime.deltaTValue(), maxDeltaT)
+                min(maxCo/CoNum, maxDi/DiNum)*runTime.deltaT().value(),
+                min(runTime.deltaTValue(), maxDeltaT)
             )
         );
-        Info<< "deltaT = " <<  runTime.deltaTValue() << endl;
+        Info<< "deltaT = " <<  runTime.deltaT().value() << endl;
     }
 }
 

applications/solvers/heatTransfer/chtMultiRegionFoam/include/setMultiRegionDeltaT.H

@@ -48,19 +48,23 @@ if (adjustTimeStep)
     scalar maxDeltaTFluid = maxCo/(CoNum + SMALL);
     scalar maxDeltaTSolid = maxDi/(DiNum + SMALL);
 
-    const scalar deltaTFluid =
-        Foam::min(Foam::min(maxDeltaTFluid, 1.0 + 0.1*maxDeltaTFluid), 1.2);
+    scalar deltaTFluid =
+        min
+        (
+            min(maxDeltaTFluid, 1.0 + 0.1*maxDeltaTFluid),
+            1.2
+        );
 
     runTime.setDeltaT
     (
-        Foam::min
+        min
         (
-            Foam::min(deltaTFluid, maxDeltaTSolid)*runTime.deltaTValue(),
+            min(deltaTFluid, maxDeltaTSolid)*runTime.deltaT().value(),
             maxDeltaT
         )
     );
 
-    Info<< "deltaT = " <<  runTime.deltaTValue() << endl;
+    Info<< "deltaT = " <<  runTime.deltaT().value() << endl;
 }
 
 // ************************************************************************* //

applications/solvers/heatTransfer/chtMultiRegionFoam/solid/createSolidFields.H

@@ -57,7 +57,7 @@
                     ),
                     solidRegions[i],
                     dimensionedSymmTensor(tkappaByCp().dimensions(), Zero),
-                    fvPatchFieldBase::zeroGradientType()
+                    zeroGradientFvPatchSymmTensorField::typeName
                 )
             );
 

applications/solvers/heatTransfer/chtMultiRegionFoam/solid/solidRegionDiffusionNo.H

@@ -22,7 +22,7 @@ forAll(solidRegions, i)
     tmp<volScalarField> trho = thermo.rho();
     const volScalarField& rho = trho();
 
-    DiNum = Foam::max
+    DiNum = max
     (
         solidRegionDiffNo
         (

applications/solvers/heatTransfer/chtMultiRegionFoam/solid/solveSolid.H

@@ -25,10 +25,10 @@
 
         if (finalIter)
         {
-            mesh.data().setFinalIteration(true);
+            mesh.data::add("finalIteration", true);
         }
 
-        hEqn.solve(h.select(finalIter));
+        hEqn.solve(mesh.solver(h.select(finalIter)));
 
         fvOptions.correct(h);
 
@@ -39,7 +39,7 @@
 
         if (finalIter)
         {
-            mesh.data().setFinalIteration(false);
+            mesh.data::remove("finalIteration");
         }
     }
 }

applications/solvers/heatTransfer/solidFoam/createFields.H

@@ -34,7 +34,7 @@ if (!thermo.isotropic())
             ),
             mesh,
             dimensionedSymmTensor(tkappaByCp().dimensions(), Zero),
-            fvPatchFieldBase::zeroGradientType()
+            zeroGradientFvPatchSymmTensorField::typeName
         )
     );
     volSymmTensorField& aniAlpha = *taniAlpha;