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Boundary layers with user-defined heights/materials

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This commit is contained in:
Matthias Hochsteger 2015-09-01 10:35:03 -04:00 committed by Matthias Hochsteger
parent c8e51c4ebc
commit 7d3041e841
3 changed files with 48 additions and 4 deletions
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19
libsrc/meshing/boundarylayer.cpp
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@ -155,6 +155,7 @@ namespace netgen
int prismlayers = blp.prismlayers; int prismlayers = blp.prismlayers;
double hfirst = blp.hfirst; double hfirst = blp.hfirst;
double growthfactor = blp.growthfactor; double growthfactor = blp.growthfactor;
Array<double> heights (blp.heights);
bool grow_edges = false; // grow layer at edges bool grow_edges = false; // grow layer at edges
@ -179,13 +180,20 @@ namespace netgen
double layerht = hfirst; double layerht = hfirst;
if(growthfactor == 1) if(heights.Size()>0)
{ {
layerht = layer * hfirst; layerht = heights[layer-1];
} }
else else
{ {
layerht = hfirst*(pow(growthfactor,(layer+1)) - 1)/(growthfactor - 1); if(growthfactor == 1)
{
layerht = layer * hfirst;
}
else
{
layerht = hfirst*(pow(growthfactor,(layer+1)) - 1)/(growthfactor - 1);
}
} }
cout << "Layer Height = " << layerht << endl; cout << "Layer Height = " << layerht << endl;
@ -510,7 +518,10 @@ namespace netgen
Element el(types[classify]); Element el(types[classify]);
for (int i = 0; i < 6; i++) for (int i = 0; i < 6; i++)
el[i] = nums[vertices[classify][i]]; el[i] = nums[vertices[classify][i]];
el.SetIndex(blp.new_matnr); if(blp.new_matnrs.Size() > 0)
el.SetIndex(blp.new_matnrs[layer-1]);
else
el.SetIndex(blp.new_matnr);
// cout << "el = " << el << endl; // cout << "el = " << el << endl;
if (classify != 0) if (classify != 0)
mesh.AddVolumeElement(el); mesh.AddVolumeElement(el);

2
libsrc/meshing/boundarylayer.hpp
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@ -13,6 +13,8 @@ class BoundaryLayerParameters
public: public:
// parameters by Philippose .. // parameters by Philippose ..
Array<int> surfid; Array<int> surfid;
Array<double> heights;
Array<double> new_matnrs;
int prismlayers = 1; int prismlayers = 1;
int bulk_matnr = 1; int bulk_matnr = 1;
int new_matnr = 1; int new_matnr = 1;

31
libsrc/meshing/python_mesh.cpp
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@ -338,6 +338,37 @@ DLL_HEADER void ExportNetgenMeshing()
})) }))
.def ("BoundaryLayer", FunctionPointer .def ("BoundaryLayer", FunctionPointer
([](Mesh & self, int bc, bp::list thicknesses, int volnr, bp::list materials)
{
int n = bp::len(thicknesses);
BoundaryLayerParameters blp;
for (int i = 1; i <= self.GetNFD(); i++)
if (self.GetFaceDescriptor(i).BCProperty() == bc)
blp.surfid.Append (i);
cout << "add layer at surfaces: " << blp.surfid << endl;
blp.prismlayers = n;
blp.growthfactor = 1.0;
// find max domain nr
int maxind = 0;
for (ElementIndex ei = 0; ei < self.GetNE(); ei++)
maxind = max (maxind, self[ei].GetIndex());
cout << "maxind = " << maxind << endl;
for ( int i=0; i<n; i++ )
{
blp.heights.Append( bp::extract<double>(thicknesses[i])()) ;
blp.new_matnrs.Append( maxind+1+i );
self.SetMaterial (maxind+1+i, bp::extract<string>(materials[i])().c_str());
}
blp.bulk_matnr = volnr;
GenerateBoundaryLayer (self, blp);
}
))
.def ("BoundaryLayer", FunctionPointer
([](Mesh & self, int bc, double thickness, int volnr, string material) ([](Mesh & self, int bc, double thickness, int volnr, string material)
{ {
BoundaryLayerParameters blp; BoundaryLayerParameters blp;