diff --git a/src/thermophysicalModels/radiation/submodels/sootModel/MossBrookesSoot/MossBrookesSoot.C b/src/thermophysicalModels/radiation/submodels/sootModel/MossBrookesSoot/MossBrookesSoot.C
index dfe507591..4c2ebd735 100644
--- a/src/thermophysicalModels/radiation/submodels/sootModel/MossBrookesSoot/MossBrookesSoot.C
+++ b/src/thermophysicalModels/radiation/submodels/sootModel/MossBrookesSoot/MossBrookesSoot.C
@@ -256,14 +256,14 @@ template<class CombThermoType, class ThermoType>
 Foam::tmp<Foam::volVectorField>
 Foam::radiation::MossBrookesSoot<CombThermoType, ThermoType>::U() const
 {
-    return this->chemistryPtr_->U();
+    return Foam::tmp<Foam::volVectorField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
 Foam::tmp<Foam::volScalarField>
 Foam::radiation::MossBrookesSoot<CombThermoType, ThermoType>::nut() const
 {
-    return this->chemistryPtr_->nut();
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
@@ -273,7 +273,7 @@ Foam::radiation::MossBrookesSoot<CombThermoType, ThermoType>::MoleFracPrec() con
     word precSpecie(coeffsDict_.lookup("Precursor"));
     const word *precspecie;
     precspecie = &precSpecie;
-    return this->chemistryPtr_->MoleFracSpecie(precspecie);
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
@@ -283,7 +283,7 @@ Foam::radiation::MossBrookesSoot<CombThermoType, ThermoType>::MoleFracSgs() cons
     word sgsSpecie(coeffsDict_.lookup("SurfaceGrowSpecie"));
     const word *sgsspecie;
     sgsspecie = &sgsSpecie;
-    return this->chemistryPtr_->MoleFracSpecie(sgsspecie);
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
@@ -293,7 +293,7 @@ Foam::radiation::MossBrookesSoot<CombThermoType, ThermoType>::MoleFracOxid() con
     word oxSpecie(coeffsDict_.lookup("SootOxidizerSpecie"));
     const word *oxspecie;
     oxspecie = &oxSpecie;
-    return this->chemistryPtr_->MoleFracSpecie(oxspecie);
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
diff --git a/src/thermophysicalModels/radiation/submodels/sootModel/MossBrookesSoot/MossBrookesSoot.H b/src/thermophysicalModels/radiation/submodels/sootModel/MossBrookesSoot/MossBrookesSoot.H
index dd19ec091..bdb225073 100644
--- a/src/thermophysicalModels/radiation/submodels/sootModel/MossBrookesSoot/MossBrookesSoot.H
+++ b/src/thermophysicalModels/radiation/submodels/sootModel/MossBrookesSoot/MossBrookesSoot.H
@@ -25,7 +25,8 @@ Class
     Foam::radiation::MossBrookesSoot
 
 Description
-    This soot model solves two transport equation for soot mass fraction and soot normalized nuclei concentration.
+    This soot model solves two transport equation for soot mass fraction
+    and soot normalized nuclei concentration.
     The detail of the model strictly follows Moss & Brookes model in fluent.
 
     Parameter settings are available in constant/radiationProperties.
@@ -55,10 +56,6 @@ Description
         SootOxidizerSpecie     OH;
     }
 
-                                                                                                2017.11.28
-                                                                                    POSTECH Combustion Lab
-                                                                                               Jinwoo Park
-
 SourceFiles
     MossBrookesSoot.C
 
diff --git a/src/thermophysicalModels/radiation/submodels/sootModel/khanGreeveSoot/khanGreeveSoot.C b/src/thermophysicalModels/radiation/submodels/sootModel/khanGreeveSoot/khanGreeveSoot.C
index 2f8eaa5a3..0e12803bd 100644
--- a/src/thermophysicalModels/radiation/submodels/sootModel/khanGreeveSoot/khanGreeveSoot.C
+++ b/src/thermophysicalModels/radiation/submodels/sootModel/khanGreeveSoot/khanGreeveSoot.C
@@ -180,7 +180,7 @@ Foam::radiation::khanGreeveSoot<CombThermoType, ThermoType>::Yox() const
     word oxidSpecie(coeffsDict_.lookup("Oxidizer"));
     const word *oxidspecie;
     oxidspecie = &oxidSpecie;
-    return this->chemistryPtr_->Yspecie(oxidspecie);
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
@@ -190,7 +190,7 @@ Foam::radiation::khanGreeveSoot<CombThermoType, ThermoType>::Yfuel() const
     word fuelSpecie(coeffsDict_.lookup("Fuel"));
     const word *fuelspecie;
     fuelspecie = &fuelSpecie;
-    return this->chemistryPtr_->Yspecie(fuelspecie);
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
@@ -200,35 +200,35 @@ Foam::radiation::khanGreeveSoot<CombThermoType, ThermoType>::MoleFracfuel() cons
     word fuelSpecie(coeffsDict_.lookup("Fuel"));
     const word *fuelspecie;
     fuelspecie = &fuelSpecie;
-    return this->chemistryPtr_->MoleFracSpecie(fuelspecie);
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
 Foam::tmp<Foam::volScalarField>
 Foam::radiation::khanGreeveSoot<CombThermoType, ThermoType>::epsilon() const
 {
-    return this->chemistryPtr_->epsilon();
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
 Foam::tmp<Foam::volScalarField>
 Foam::radiation::khanGreeveSoot<CombThermoType, ThermoType>::k() const
 {
-    return this->chemistryPtr_->k();
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
 Foam::tmp<Foam::volVectorField>
 Foam::radiation::khanGreeveSoot<CombThermoType, ThermoType>::U() const
 {
-    return this->chemistryPtr_->U();
+    return Foam::tmp<Foam::volVectorField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
 Foam::tmp<Foam::volScalarField>
 Foam::radiation::khanGreeveSoot<CombThermoType, ThermoType>::nut() const
 {
-    return this->chemistryPtr_->nut();
+    return Foam::tmp<Foam::volScalarField>(NULL);
 }
 
 template<class CombThermoType, class ThermoType>
diff --git a/src/thermophysicalModels/radiation/submodels/sootModel/khanGreeveSoot/khanGreeveSoot.H b/src/thermophysicalModels/radiation/submodels/sootModel/khanGreeveSoot/khanGreeveSoot.H
index 4bd2becae..0841eabbf 100644
--- a/src/thermophysicalModels/radiation/submodels/sootModel/khanGreeveSoot/khanGreeveSoot.H
+++ b/src/thermophysicalModels/radiation/submodels/sootModel/khanGreeveSoot/khanGreeveSoot.H
@@ -51,10 +51,6 @@ Description
         Oxidizer                   O2;
     }
 
-                                                                                                2017.11.28
-                                                                                    POSTECH Combustion Lab
-                                                                                               Jinwoo Park
-
 SourceFiles
     khanGreeveSoot.C