diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModel.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModel.C
index e1a3888a4..1c0d5ea05 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModel.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModel.C
@@ -54,7 +54,7 @@ Foam::TDACChemistryModel<CompType, ThermoType>::TDACChemistryModel
     (
         IOobject
         (
-            "TabulationResults",
+            IOobject::groupName("TabulationResults", phaseName),
             this->time().timeName(),
             this->mesh(),
             IOobject::NO_READ,
@@ -75,7 +75,7 @@ Foam::TDACChemistryModel<CompType, ThermoType>::TDACChemistryModel
 
     forAll(specieComp_, i)
     {
-        specieComp_[i] = specComp[this->Y()[i].name()];
+        specieComp_[i] = specComp[this->Y()[i].member()];
     }
 
     mechRed_ = chemistryReductionMethod<CompType, ThermoType>::New
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModelI.H b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModelI.H
index 011e47aa2..1815e31c7 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModelI.H
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModelI.H
@@ -45,12 +45,12 @@ template<class CompType, class ThermoType>
 inline Foam::autoPtr<Foam::OFstream>
 Foam::TDACChemistryModel<CompType, ThermoType>::logFile(const word& name) const
 {
-    mkDir(this->mesh().time().path()/"TDAC");
+    mkDir(this->mesh().time().path()/"TDAC"/this->group());
     return autoPtr<OFstream>
     (
         new OFstream
         (
-            this->mesh().time().path()/"TDAC"/name
+            this->mesh().time().path()/"TDAC"/this->group()/name
         )
     );
 }
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DAC/DAC.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DAC/DAC.C
index f09294485..9f7a51b15 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DAC/DAC.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DAC/DAC.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
@@ -91,7 +91,7 @@ Foam::chemistryReductionMethods::DAC<CompType, ThermoType>::DAC
     dictionary initSet = this->coeffsDict_.subDict("initialSet");
     for (label i=0; i<chemistry.nSpecie(); i++)
     {
-        if (initSet.found(chemistry.Y()[i].name()))
+        if (initSet.found(chemistry.Y()[i].member()))
         {
             searchInitSet_[j++] = i;
         }
@@ -160,23 +160,23 @@ Foam::chemistryReductionMethods::DAC<CompType, ThermoType>::DAC
                 Info<< "element not considered"<<endl;
             }
         }
-        if (this->chemistry_.Y()[i].name() == CO2Name_)
+        if (this->chemistry_.Y()[i].member() == CO2Name_)
         {
             CO2Id_ = i;
         }
-        else if (this->chemistry_.Y()[i].name() == COName_)
+        else if (this->chemistry_.Y()[i].member() == COName_)
         {
             COId_ = i;
         }
-        else if (this->chemistry_.Y()[i].name() == HO2Name_)
+        else if (this->chemistry_.Y()[i].member() == HO2Name_)
         {
             HO2Id_ = i;
         }
-        else if (this->chemistry_.Y()[i].name() == H2OName_)
+        else if (this->chemistry_.Y()[i].member() == H2OName_)
         {
             H2OId_ = i;
         }
-        else if (this->chemistry_.Y()[i].name() == NOName_)
+        else if (this->chemistry_.Y()[i].member() == NOName_)
         {
             NOId_ = i;
         }
@@ -230,7 +230,7 @@ Foam::chemistryReductionMethods::DAC<CompType, ThermoType>::DAC
             fuelSpeciesProp_[i] = readScalar(fuelDict.lookup(fuelSpecies_[i]));
             for (label j=0; j<this->nSpecie_; j++)
             {
-                if (this->chemistry_.Y()[j].name() == fuelSpecies_[i])
+                if (this->chemistry_.Y()[j].member() == fuelSpecies_[i])
                 {
                     fuelSpeciesID_[i] = j;
                     break;
@@ -496,8 +496,8 @@ void Foam::chemistryReductionMethods::DAC<CompType, ThermoType>::reduceMechanism
             // Complete combustion products are not considered
             if
             (
-                this->chemistry_.Y()[i].name() == "CO2"
-             || this->chemistry_.Y()[i].name() == "H2O"
+                this->chemistry_.Y()[i].member() == "CO2"
+             || this->chemistry_.Y()[i].member() == "H2O"
             )
             {
                 continue;
@@ -505,7 +505,7 @@ void Foam::chemistryReductionMethods::DAC<CompType, ThermoType>::reduceMechanism
             Na[0] += sC_[i]*c[i];
             Na[1] += sH_[i]*c[i];
             Na[2] += sO_[i]*c[i];
-            if (sC_[i]>nbCLarge_ || this->chemistry_.Y()[i].name() == "O2")
+            if (sC_[i]>nbCLarge_ || this->chemistry_.Y()[i].member() == "O2")
             {
                 Nal[0] += sC_[i]*c[i];
                 Nal[1] += sH_[i]*c[i];
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DRG/DRG.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DRG/DRG.C
index 6e335aa25..de8c02f54 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DRG/DRG.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DRG/DRG.C
@@ -41,7 +41,7 @@ Foam::chemistryReductionMethods::DRG<CompType, ThermoType>::DRG
     dictionary initSet = this->coeffsDict_.subDict("initialSet");
     for (label i=0; i<chemistry.nSpecie(); i++)
     {
-        if (initSet.found(chemistry.Y()[i].name()))
+        if (initSet.found(chemistry.Y()[i].member()))
         {
             searchInitSet_[j++] = i;
         }
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DRGEP/DRGEP.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DRGEP/DRGEP.C
index b6efcc3fb..3e933c3d2 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DRGEP/DRGEP.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/DRGEP/DRGEP.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
@@ -47,7 +47,7 @@ Foam::chemistryReductionMethods::DRGEP<CompType, ThermoType>::DRGEP
     dictionary initSet = this->coeffsDict_.subDict("initialSet");
     for (label i=0; i<chemistry.nSpecie(); i++)
     {
-        if (initSet.found(chemistry.Y()[i].name()))
+        if (initSet.found(chemistry.Y()[i].member()))
         {
             searchInitSet_[j++]=i;
         }
@@ -651,8 +651,8 @@ reduceMechanism
                         {
                             Info<< "Badly Conditioned rAB : " << rAB
                             << "species involved : "
-                            <<this->chemistry_.Y()[u].name() << ","
-                            << this->chemistry_.Y()[otherSpec].name()
+                            <<this->chemistry_.Y()[u].member() << ","
+                            << this->chemistry_.Y()[otherSpec].member()
                             << endl;
                             rAB=1.0;
                         }
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/PFA/PFA.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/PFA/PFA.C
index 1bd9dd6c2..58c8e4340 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/PFA/PFA.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/PFA/PFA.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
@@ -43,7 +43,7 @@ Foam::chemistryReductionMethods::PFA<CompType, ThermoType>::PFA
 
     for (label i=0; i<chemistry.nSpecie(); i++)
     {
-        if (initSet.found(chemistry.Y()[i].name()))
+        if (initSet.found(chemistry.Y()[i].member()))
         {
             searchInitSet_[j++] = i;
         }
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/chemistryReductionMethod/chemistryReductionMethodNew.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/chemistryReductionMethod/chemistryReductionMethodNew.C
index 37c7044ec..d64ae80c3 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/chemistryReductionMethod/chemistryReductionMethodNew.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/reduction/chemistryReductionMethod/chemistryReductionMethodNew.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
@@ -40,7 +40,7 @@ Foam::chemistryReductionMethod<CompType, ThermoType>::New
     (
         IOobject
         (
-            "thermophysicalProperties",
+            IOobject::groupName("thermophysicalProperties",dict.group()),
             dict.db().time().constant(),
             dict.db(),
             IOobject::MUST_READ_IF_MODIFIED,
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/ISAT/ISAT.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/ISAT/ISAT.C
index 555365b7b..f4eaa709a 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/ISAT/ISAT.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/ISAT/ISAT.C
@@ -84,7 +84,7 @@ Foam::chemistryTabulationMethods::ISAT<CompType, ThermoType>::ISAT
         scalar otherScaleFactor = readScalar(scaleDict.lookup("otherSpecies"));
         for (label i=0; i<Ysize; i++)
         {
-            if (!scaleDict.found(this->chemistry_.Y()[i].name()))
+            if (!scaleDict.found(this->chemistry_.Y()[i].member()))
             {
                 scaleFactor_[i] = otherScaleFactor;
             }
@@ -93,7 +93,7 @@ Foam::chemistryTabulationMethods::ISAT<CompType, ThermoType>::ISAT
                 scaleFactor_[i] =
                     readScalar
                     (
-                        scaleDict.lookup(this->chemistry_.Y()[i].name())
+                        scaleDict.lookup(this->chemistry_.Y()[i].member())
                     );
             }
         }
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/ISAT/chemPointISAT/chemPointISAT.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/ISAT/chemPointISAT/chemPointISAT.C
index 33bf76881..1499b07a9 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/ISAT/chemPointISAT/chemPointISAT.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/ISAT/chemPointISAT/chemPointISAT.C
@@ -512,7 +512,7 @@ bool Foam::chemPointISAT<CompType, ThermoType>::inEOA(const scalarField& phiq)
             }
             else
             {
-                propName = chemistry_.Y()[maxIndex].name();
+                propName = chemistry_.Y()[maxIndex].member();
             }
             Info<< "Direction maximum impact to error in ellipsoid: "
                 << propName << endl;
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/chemistryTabulationMethod/chemistryTabulationMethodNew.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/chemistryTabulationMethod/chemistryTabulationMethodNew.C
index 269613d1d..2e1a7eeee 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/chemistryTabulationMethod/chemistryTabulationMethodNew.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/tabulation/chemistryTabulationMethod/chemistryTabulationMethodNew.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
@@ -40,7 +40,7 @@ Foam::chemistryTabulationMethod<CompType, ThermoType>::New
     (
          IOobject
          (
-              "thermophysicalProperties",
+              IOobject::groupName("thermophysicalProperties",dict.group()),
               dict.db().time().constant(),
               dict.db(),
               IOobject::MUST_READ_IF_MODIFIED,