The mesher.py module

Summary

Functions

mesh_from_manifold_input_model	Create mesh from a good-quality manifold input model.
mesh_from_non_manifold_input_model	Generate mesh from a non-manifold poor quality input model.

Description

Module containing methods for interaction with Fluent meshing.

Module detail

mesher.mesh_from_manifold_input_model(model: ansys.health.heart.pre.input._InputModel, workdir: str | pathlib.Path, path_to_output: str | pathlib.Path, mesh_size: float = 2.0, overwrite_existing_mesh: bool = True) → ansys.health.heart.objects.Mesh

Create mesh from a good-quality manifold input model.

Parameters:

model_InputModel

Input model.

workdirUnion[str, Path]

Working directory.

path_to_outputUnion[str, Path]

Path to the resulting Fluent mesh file.

mesh_sizefloat, default: 2.0

Uniform mesh size to use for both wrapping and filling the volume.

Returns:

Mesh

VTK mesh with both cell and face zones.

mesher.mesh_from_non_manifold_input_model(model: ansys.health.heart.pre.input._InputModel, workdir: str | pathlib.Path, path_to_output: str | pathlib.Path, global_mesh_size: float = 2.0, _global_wrap_size: float = 1.5, overwrite_existing_mesh: bool = True, mesh_size_per_part: dict = None, _wrap_size_per_part: dict = None) → ansys.health.heart.objects.Mesh

Generate mesh from a non-manifold poor quality input model.

Parameters:

model_InputModel

Input model.

workdirUnion[str, Path]

Working directory.

path_to_outputUnion[str, Path]

Path to the resulting Fluent mesh file.

global_mesh_sizefloat, default: 2.0

Uniform mesh size to use for all volumes and surfaces.

_global_wrap_sizefloat, default: 1.5

Global size used by the wrapper to reconstruct the geometry.

overwrite_existing_meshbool, default: True

Whether to overwrite an existing mesh.

mesh_size_per_partdict, default: None

Dictionary specifying the mesh size that should be used for each part.

_wrap_size_per_partdict, default: None

Dictionary specifying the wrap size that should be used to wrap each part.

Returns:

Mesh

VTK mesh with both cell and face zones.

Notes

This method uses Fluent wrapping technology to wrap the individual parts. First it creates manifold parts. Then, it consequently wraps the entire model and uses the manifold parts to split the wrapped model into the different cell zones.

When specifying a mesh size per part, you can do that by either specifying the size for all parts or for specific parts. The default mesh size is used for any part not listed in the dictionary. This also applies to the wrapping step. You can control the wrap size per part or on a global level. By default, a size of 1.5 mm is used, but this value is not guaranteed to give good results.

Note that a post-wrap remesh is triggered if the wrap size is not equal to the target mesh size. Remeshing might fail if the target mesh size deviates too much from the wrap size.