Changeset 19267

Timestamp:

04/07/15 15:51:47 (10 years ago)

Author:

seroussi

Message:

CHG: computing vertical velocities from the surface

Location:

issm/trunk-jpl/src/c/analyses

Files:

• StressbalanceVerticalAnalysis.cpp (modified) (5 diffs)
• StressbalanceVerticalAnalysis.h (modified) (1 diff)

issm/trunk-jpl/src/c/analyses/StressbalanceVerticalAnalysis.cpp

@@ -112 +112 @@
         iomodel->FetchDataToInput(elements,BasalforcingsGroundediceMeltingRateEnum);
         iomodel->FetchDataToInput(elements,BasalforcingsFloatingiceMeltingRateEnum);
+        iomodel->FetchDataToInput(elements,SurfaceforcingsMassBalanceEnum);
         iomodel->FetchDataToInput(elements,VxEnum,0.);
         iomodel->FetchDataToInput(elements,VyEnum,0.);
@@ -137 +138 @@
 ElementMatrix* StressbalanceVerticalAnalysis::CreateKMatrix(Element* element){/*{{{*/
 
+        bool hack = false;
+
         /*compute all stiffness matrices for this element*/
         ElementMatrix* Ke1=CreateKMatrixVolume(element);
-        ElementMatrix* Ke2=CreateKMatrixSurface(element);
+        ElementMatrix* Ke2=NULL;
+        if(hack) Ke2=CreateKMatrixBase(element);
+        else Ke2=CreateKMatrixSurface(element);
         ElementMatrix* Ke =new ElementMatrix(Ke1,Ke2);
 
@@ -147 +152 @@
         return Ke;
 
+}/*}}}*/
+ElementMatrix* StressbalanceVerticalAnalysis::CreateKMatrixBase(Element* element){/*{{{*/
+
+
+        if(!element->IsOnBase()) return NULL;
+
+        /*Intermediaries*/
+        IssmDouble  D,Jdet,normal[3];
+        IssmDouble *xyz_list = NULL;
+
+        /*Fetch number of nodes and dof for this finite element*/
+        int numnodes = element->GetNumberOfNodes();
+
+        /*Initialize Element matrix and vectors*/
+        ElementMatrix* Ke    = element->NewElementMatrix(NoneApproximationEnum);
+        IssmDouble*    basis = xNew<IssmDouble>(numnodes);
+
+        /*Retrieve all inputs and parameters*/
+        element->GetVerticesCoordinatesBase(&xyz_list);
+
+        /* Start  looping on the number of gaussian points: */
+        Gauss* gauss = element->NewGaussBase(2);
+        element->NormalBase(&normal[0],xyz_list);
+        for(int ig=gauss->begin();ig<gauss->end();ig++){
+                gauss->GaussPoint(ig);
+
+                element->JacobianDeterminantBase(&Jdet,xyz_list,gauss);
+                element->NodalFunctions(basis,gauss);
+                D = -gauss->weight*Jdet*normal[2];
+
+                TripleMultiply( basis,1,numnodes,1,
+                                        &D,1,1,0,
+                                        basis,1,numnodes,0,
+                                        &Ke->values[0],1);
+        }
+
+        /*Clean up and return*/
+        delete gauss;
+        xDelete<IssmDouble>(xyz_list);
+        xDelete<IssmDouble>(basis);
+        return Ke;
 }/*}}}*/
 ElementMatrix* StressbalanceVerticalAnalysis::CreateKMatrixSurface(Element* element){/*{{{*/
@@ -232 +278 @@
 ElementVector* StressbalanceVerticalAnalysis::CreatePVector(Element* element){/*{{{*/
 
+        bool hack = false;
+
         /*compute all load vectors for this element*/
         ElementVector* pe1=CreatePVectorVolume(element);
-        ElementVector* pe2=CreatePVectorBase(element);
+        ElementVector* pe2=NULL;
+        if(hack) pe2=CreatePVectorSurface(element);
+        else     pe2=CreatePVectorBase(element);
         ElementVector* pe =new ElementVector(pe1,pe2);
 
@@ -308 +358 @@
         return pe;
 }/*}}}*/
+ElementVector* StressbalanceVerticalAnalysis::CreatePVectorSurface(Element* element){/*{{{*/
+
+        /*Intermediaries */
+        int         approximation;
+        IssmDouble *xyz_list      = NULL;
+        IssmDouble *xyz_list_surface= NULL;
+        IssmDouble  Jdet,slope[3];
+        IssmDouble  vx,vy,vz=0.,dsdx,dsdy;
+        IssmDouble  smb,smbvalue;
+
+        if(!element->IsOnSurface()) return NULL;
+
+        /*Fetch number of nodes for this finite element*/
+        int numnodes = element->GetNumberOfNodes();
+
+        /*Initialize Element vector*/
+        ElementVector* pe    = element->NewElementVector();
+        IssmDouble*    basis = xNew<IssmDouble>(numnodes);
+
+        /*Retrieve all inputs and parameters*/
+        element->GetVerticesCoordinates(&xyz_list);
+        element->GetVerticesCoordinatesTop(&xyz_list_surface);
+        element->GetInputValue(&approximation,ApproximationEnum);
+        Input* surface_input    =element->GetInput(SurfaceEnum);               _assert_(surface_input);
+        Input* smb_input=element->GetInput(SurfaceforcingsMassBalanceEnum);    _assert_(smb_input);
+        Input* vx_input=element->GetInput(VxEnum);                             _assert_(vx_input);
+        Input* vy_input=element->GetInput(VyEnum);                             _assert_(vy_input);
+        Input* vzFS_input=NULL;
+        if(approximation==HOFSApproximationEnum || approximation==SSAFSApproximationEnum){
+                vzFS_input=element->GetInput(VzFSEnum);       _assert_(vzFS_input);
+        }
+
+        /* Start  looping on the number of gaussian points: */
+        Gauss* gauss=element->NewGaussTop(2);
+        for(int ig=gauss->begin();ig<gauss->end();ig++){
+                gauss->GaussPoint(ig);
+
+                smb_input->GetInputValue(&smb,gauss);
+                surface_input->GetInputDerivativeValue(&slope[0],xyz_list,gauss);
+                vx_input->GetInputValue(&vx,gauss);
+                vy_input->GetInputValue(&vy,gauss);
+                if(approximation==HOFSApproximationEnum || approximation==SSAFSApproximationEnum){
+                        vzFS_input->GetInputValue(&vz,gauss);
+                }
+                dsdx=slope[0];
+                dsdy=slope[1];
+
+                element->JacobianDeterminantTop(&Jdet,xyz_list_surface,gauss);
+                element->NodalFunctions(basis,gauss);
+
+                for(int i=0;i<numnodes;i++) pe->values[i]+=-Jdet*gauss->weight*(vx*dsdx+vy*dsdy-vz+smb)*basis[i];
+        }
+
+        /*Clean up and return*/
+        delete gauss;
+        xDelete<IssmDouble>(basis);
+        xDelete<IssmDouble>(xyz_list);
+        xDelete<IssmDouble>(xyz_list_surface);
+        return pe;
+}/*}}}*/
 ElementVector* StressbalanceVerticalAnalysis::CreatePVectorVolume(Element* element){/*{{{*/
 

issm/trunk-jpl/src/c/analyses/StressbalanceVerticalAnalysis.h

@@ -25 +25 @@
                 ElementMatrix* CreateJacobianMatrix(Element* element);
                 ElementMatrix* CreateKMatrix(Element* element);
+                ElementMatrix* CreateKMatrixBase(Element* element);
                 ElementMatrix* CreateKMatrixSurface(Element* element);
                 ElementMatrix* CreateKMatrixVolume(Element* element);
                 ElementVector* CreatePVector(Element* element);
                 ElementVector* CreatePVectorBase(Element* element);
+                ElementVector* CreatePVectorSurface(Element* element);
                 ElementVector* CreatePVectorVolume(Element* element);
                 void           GetB(IssmDouble* B,Element* element,IssmDouble* xyz_list,Gauss* gauss);