Model.autotopocleanup2#

Model.autotopocleanup2(surface_collection, criteria_file_name, param_file_name, do_midmesh=0, extract_midsurface=0)#

Performs automatic preparation of a model’s topology for meshing, using specified element size and element quality criteria. These criteria may include geometry feature recognition (fillets, holes, beads, flanges, etc.), the topology simplification, cleaning of small features, etc. The parameters controlling the topology cleanup stages and tools are given as a set of topology cleanup parameters.

In comparison with Model.autotopocleanup(), the Model.autotopocleanup2() by default excludes some cleanup operations even if they are set in the input parameters. Currently, the direct midmesh option is excluded by default.

Parameters:

  • surface_collection (Collection) – The collection containing the input surface entities.

  • criteria_file_name (hwString) – The path to the file with element quality criteria. If the quality criteria file has been defined using Model.readqualitycriteria() or Model.setqualitycriteria() functions, the value of this option can be set to criteria_file_name="dummy".

  • param_file_name (hwString) – The path to the file with topology cleanup parameters. By default, the midmesh operation is ignored even if enabled in the parameters file. If the cleanup parameters file has been defined using Model.readbatchparamsfile() , Model.batchparams_update(), or Model.create_batch_file() functions, the value of this option can be set to param_file_name="dummy".

  • do_midmesh (int) –

    Controls the use of allow midmesh parameter given in the input parameters file. Valid options are:

    0 - Disabled

    1 - Enabled

  • extract_midsurface (int) –

    Controls the use of extract midsurface parameter given in the input parameters file.

    0 - Disabled

    1 - Enabled

Examples#

Perform topology cleanup of all displayed surfaces use element quality criteria “C:/cleanup_files/nvh10.criteria” and quality parameters file “C:/cleanup_files/nvh10.param”#
import hm
import hm.entities as ent

model = hm.Model()

surf_col = hm.CollectionByDisplayed(model, ent.Surface)

model.autotopocleanup(
    surfcollection=surf_col,
    criteria_file_name="C:/cleanup_files/nvh10.criteria",
    param_file_name="C:/cleanup_files/nvh10.param",
)
Perform topology cleanup of all displayed surafaces use element quality criteria and quality parameters set beforehand#
import hm
import hm.entities as ent

model = hm.Model()
# Setting quality criteria from command file
quality_string_list = [
    " 0 penalty value      0.00    0.00    0.80    1.00   10.00",
    " 1 min length        1 1.0   3.000   2.749   1.502   1.000   0.749  1",
    " 2 max length        1 1.0   3.000   3.600   4.500   6.000   9.000  0",
    " 3 aspect ratio      1 1.0   1.000   2.000   4.400   5.000  10.000  0",
    " 4 warpage           1 1.0   0.000   5.000  13.000  15.000  30.000  0",
    " 5 max angle quad    1 1.0  90.000 110.000 134.000 140.000 160.000  0",
    " 6 min angle quad    1 1.0  90.000  70.000  46.000  40.000  20.000  0",
    " 7 max angle tria    1 1.0  60.000  80.000 112.000 120.000 150.000  0",
    " 8 min angle tria    1 1.0  60.000  50.000  34.000  30.000  15.000  0",
    " 9 skew              1 1.0   0.000  10.000  34.000  40.000  70.000  0",
    "10 jacobian          1 1.0   1.000   0.900   0.700   0.600   0.300  0",
    "11 chordal dev       0 1.0   0.000   0.300   0.800   1.000   2.000  0",
    "12 taper             1 1.0   0.000   0.200   0.500   0.600   0.900  0",
    "13 % of trias        1 1.0   0.000   6.000  10.000  15.000  20.000  0",
]
model.setqualitycriteria(string_array=quality_string_list, mode=0)

# Reading batch parameters from a file
model.readbatchparamsfile(params_filename="E:/batch_params/general10.params")

# Performing clean-up operation
surf_col = hm.CollectionByDisplayed(model, ent.Surface)
model.autotopocleanup(
    surfcollection=surf_col,
    criteria_file_name="dummy",
    param_file_name="dummy",
)