Remove InflationGrader (temporarily)

Author: FranzBangar

examples/advanced/grader_test.py

@@ -5,53 +5,67 @@
 # A nozzle with a chamber that produces self-induced oscillations.
 # See helmholtz_nozzle.svg for geometry explanation.
 
-# Also a good example how inapproproate blocking leads to bad mesh
-# when boundary layers are required.
-
-# Also a good example how InflationGrader isn't finished yet.
-# TODO: finish InflationGrader
-
-# geometry data (all dimensions in milimeters):
+# geometry data (all dimensions in meters):
 # inlet pipe
-r_inlet = 10
-l_inlet = 50
+r_inlet = 10e-3
+l_inlet = 50e-3
 
 # nozzle
-r_nozzle = 6
-l_nozzle = 20
+r_nozzle = 6e-3
+l_nozzle = 20e-3
 
 # chamber
-l_chamber_inner = 100
-l_chamber_outer = 105
-r_chamber_outer = 20
+l_chamber_inner = 100e-3
+l_chamber_outer = 105e-3
+r_chamber_outer = 20e-3
 
 # outlet
-l_outlet = 80
+l_outlet = 80e-3
 
 # cell sizing
-first_cell_size = 0.02
-bulk_cell_size = 1.2
+cell_size = 1.5e-3
+bl_size = 0.15e-3
+c2c_expansion = 1.1
+axial_expansion = 2  # make cells in non-interesting places longer to save on count
 
 mesh = cb.Mesh()
 
 # inlet
 inlet = cb.Cylinder([0, 0, 0], [l_inlet, 0, 0], [0, 0, r_inlet])
+inlet.chop_axial(start_size=cell_size * axial_expansion, end_size=cell_size)
+inlet.chop_tangential(start_size=cell_size)
 
 inlet.set_start_patch("inlet")
 inlet.set_outer_patch("wall")
 mesh.add(inlet)
 
 # nozzle
 nozzle = cb.Frustum.chain(inlet, l_nozzle, r_nozzle)
+# cell sizing: make sure bl_size is correct here
+nozzle.chop_axial(length_ratio=0.5, start_size=cell_size * axial_expansion, end_size=cell_size)
+nozzle.chop_axial(length_ratio=0.5, start_size=cell_size, end_size=bl_size)
+nozzle.chop_radial(end_size=bl_size, c2c_expansion=1 / c2c_expansion)
 nozzle.set_outer_patch("wall")
 mesh.add(nozzle)
 
 # chamber: inner cylinder
 chamber_inner = cb.Cylinder.chain(nozzle, l_chamber_inner)
+# create smaller cells at inlet and outlet but leave them bigger in the middle;
+chamber_inner.chop_axial(length_ratio=0.25, start_size=bl_size, end_size=cell_size)
+chamber_inner.chop_axial(length_ratio=0.25, start_size=cell_size, end_size=cell_size * axial_expansion)
+
+chamber_inner.chop_axial(length_ratio=0.25, start_size=cell_size * axial_expansion, end_size=cell_size)
+chamber_inner.chop_axial(length_ratio=0.25, start_size=cell_size, end_size=bl_size)
 mesh.add(chamber_inner)
 
 # chamber outer: expanded ring; the end face will be moved when the mesh is assembled
 chamber_outer = cb.ExtrudedRing.expand(chamber_inner, r_chamber_outer - r_inlet)
+chamber_outer.chop_radial(length_ratio=0.5, start_size=bl_size, c2c_expansion=c2c_expansion)
+chamber_outer.chop_radial(length_ratio=0.5, end_size=bl_size, c2c_expansion=1 / c2c_expansion)
+chamber_outer.set_start_patch("wall")
+chamber_outer.set_end_patch("wall")
+chamber_outer.set_outer_patch("wall")
+mesh.add(chamber_outer)
 
 # translate outer points of outer chamber (and edges) to get
 # that inverted cone at the end;
@@ -62,21 +76,12 @@
 
     face.add_edge(1, cb.Origin([l_inlet + l_nozzle + l_chamber_outer, 0, 0]))
 
-chamber_outer.set_start_patch("wall")
-chamber_outer.set_end_patch("wall")
-chamber_outer.set_outer_patch("wall")
-mesh.add(chamber_outer)
-
 # outlet pipe
 outlet = cb.Cylinder.chain(chamber_inner, l_outlet)
+outlet.chop_axial(length_ratio=0.5, start_size=bl_size, end_size=cell_size)
+outlet.chop_axial(length_ratio=0.5, start_size=cell_size, end_size=cell_size * axial_expansion)
 outlet.set_outer_patch("wall")
 outlet.set_end_patch("outlet")
 mesh.add(outlet)
 
-mesh.modify_patch("wall", "wall")
-
-grader = cb.InflationGrader(mesh, first_cell_size, bulk_cell_size)
-grader.grade()
-
-mesh.settings["scale"] = 0.001
 mesh.write(os.path.join("..", "case", "system", "blockMeshDict"), debug_path="debug.vtk")

examples/advanced/inflation_grader.py

@@ -33,8 +33,7 @@
 mesh.modify_patch("walls", "wall")
 
 # automatic grading
-# grader = cb.SmoothGrader(mesh, 0.1)
-grader = cb.InflationGrader(mesh, bl_thickness, core_size)
+grader = cb.SmoothGrader(mesh, 0.1)
 grader.grade()
 
 mesh.write(os.path.join("..", "case", "system", "blockMeshDict"), debug_path="debug.vtk")