add reset flag for particle properties

use a reset flag to indicate if particle properties should be reset to
the initial value each coupling step (note that the property value is
always reset if re-allocation happens when the number of particles has
changed)

src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.C

@@ -829,7 +829,7 @@ bool cfdemCloud::reAllocArrays()
             ++iter
         )
         {
-            if (iter().size > 0 && iter().initVal == 0.0) {
+            if (iter().size > 0 && iter().reset) {
                 if ((*(iter().ti)) == typeid(int**)) {
                     int**& property = iter().ref<int**>();
                     for (int index=0; index<numberOfParticles(); ++index) {

src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.H

@@ -194,6 +194,7 @@ protected:
         const std::type_info* ti;
         int size;
         double initVal;
+        bool reset;
         template<typename T>
         T& ref() {
           if (*ti == typeid(T)) return *reinterpret_cast<T*>(&property);
@@ -460,7 +461,7 @@ public:
         bool checkPeriodicCells() const { return checkPeriodicCells_; }
 
         template<typename T>
-        void registerParticleProperty(const word& property, int size=0, double initVal=0.0);
+        void registerParticleProperty(const word& property, int size=0, double initVal=0.0, bool reset=true);
         template<typename T>
         T& getParticlePropertyRef(const word& property);
 protected:

src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloudI.H

@@ -405,9 +405,9 @@ inline const turbulenceModel& cfdemCloud::turbulence() const
 
 
 template<typename T>
-void cfdemCloud::registerParticleProperty(const word& property, int size, double initVal)
+void cfdemCloud::registerParticleProperty(const word& property, int size, double initVal, bool reset)
 {
-    particlePropertyTable.insert(property,{NULL,&typeid(T),size,initVal});
+    particlePropertyTable.insert(property,{NULL,&typeid(T),size,initVal,reset});
 }
 
 template<typename T>

src/lagrangian/cfdemParticle/subModels/forceModel/KochHillRWDrag/KochHillRWDrag.C

@@ -97,8 +97,8 @@ KochHillRWDrag::KochHillRWDrag
     if (propsDict_.found("rhoP"))
         rhoP_= readScalar(propsDict_.lookup("rhoP"));
 
-    particleCloud_.registerParticleProperty<double**>("partTime",1);
-    particleCloud_.registerParticleProperty<double**>("partUfluct",3);
+    particleCloud_.registerParticleProperty<double**>("partTime",1,0.0,false);
+    particleCloud_.registerParticleProperty<double**>("partUfluct",3,0.0,false);
 }
 
 

src/lagrangian/cfdemParticle/subModels/forceModel/virtualMassForce/virtualMassForce.C

@@ -72,7 +72,7 @@ virtualMassForce::virtualMassForce
     splitUrelCalculation_(propsDict_.lookupOrDefault<bool>("splitUrelCalculation",false)),
     Cadd_(0.5)
 {
-    particleCloud_.registerParticleProperty<double**>("UrelOld",3,NOTONCPU);
+    particleCloud_.registerParticleProperty<double**>("UrelOld",3,NOTONCPU,false);
 
     // init force sub model
     setForceSubModels(propsDict_);

src/lagrangian/cfdemParticle/subModels/regionModel/regionModel/regionModel.C

@@ -59,8 +59,8 @@ regionModel::regionModel
     dict_(dict),
     particleCloud_(sm)
 {
-    particleCloud_.registerParticleProperty<double**>("inRegion",1,1.0);
-    particleCloud_.registerParticleProperty<double**>("outRegion",1,1.0);
+    particleCloud_.registerParticleProperty<double**>("inRegion",1,1.0,false);
+    particleCloud_.registerParticleProperty<double**>("outRegion",1,1.0,false);
 }
 
 

src/lagrangian/cfdemParticle/subModels/voidFractionModel/voidFractionModel/voidFractionModel.C

@@ -88,7 +88,7 @@ voidFractionModel::voidFractionModel
     weight_(1.),
     porosity_(1.)
 {
-    particleCloud_.registerParticleProperty<int**>("cellsPerParticle",1,1.0);
+    particleCloud_.registerParticleProperty<int**>("cellsPerParticle",1,1.0,false);
     if (particleCloud_.getParticleEffVolFactors()) multiWeights_ = true;
 }
 
@@ -131,7 +131,7 @@ voidFractionModel::voidFractionModel
     weight_(1.),
     porosity_(1.)
 {
-    particleCloud_.registerParticleProperty<int**>("cellsPerParticle",1,1.0);
+    particleCloud_.registerParticleProperty<int**>("cellsPerParticle",1,1.0,false);
 }
 
 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //