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Curved surface mesh #25

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Apr 25, 2024
Merged

Curved surface mesh #25

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10 changes: 7 additions & 3 deletions ngsPETSc/utils/firedrake.py
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,9 @@ def curveField(self, order, tol=1e-8):
:arg order: the order of the curved mesh

'''
#Checking if the mesh is a surface mesh
surf = len(self.netgen_mesh.Elements3D()) == 0
#Constructing mesh as a function
low_order_element = self.coordinates.function_space().ufl_element().sub_elements[0]
element = low_order_element.reconstruct(degree=order)
space = fd.VectorFunctionSpace(self, fd.BrokenElement(element))
Expand Down Expand Up @@ -144,17 +147,18 @@ def curveField(self, order, tol=1e-8):
newFunctionCoordinates.sub(0).dat.data[datIdx] = curvedPhysPts[i][j][0]
newFunctionCoordinates.sub(1).dat.data[datIdx] = curvedPhysPts[i][j][1]
if self.geometric_dimension() == 3:
els = {True: self.netgen_mesh.Elements2D, False: self.netgen_mesh.Elements3D}
#Mapping to the physical domain
physPts = np.ndarray((len(self.netgen_mesh.Elements3D()),
physPts = np.ndarray((len(els[surf]()),
refPts.shape[0], self.geometric_dimension()))
self.netgen_mesh.CalcElementMapping(refPts, physPts)
#Cruving the mesh
self.netgen_mesh.Curve(order)
curvedPhysPts = np.ndarray((len(self.netgen_mesh.Elements3D()),
curvedPhysPts = np.ndarray((len(els[surf]()),
refPts.shape[0], self.geometric_dimension()))
self.netgen_mesh.CalcElementMapping(refPts, curvedPhysPts)
cellMap = newFunctionCoordinates.cell_node_map()
for i, el in enumerate(self.netgen_mesh.Elements3D()):
for i, el in enumerate(els[surf]()):
#Inefficent code but runs only on curved elements
if el.curved:
pts = physPts[i][0:refPts.shape[0]]
Expand Down