Extract a mesh in split parts

Fluent CFX

This tutorial shows how to extract meshes split on a given space or time from a result file.

To accomplish this goal, use the meshes_provider operator. The split meshes are given in a MeshesContainer and can be spatially or temporally varying.

Import the necessary modules

from ansys.dpf import core as dpf
from ansys.dpf.core import examples, operators as ops

Define the DataSources

Create DataSources objects so the meshes_provider operator can access the mesh. For this tutorial, use result files available in the examples module. For more information on importing result files, see the Import Data tutorials section.

# Fluent
result_file_path_3 = examples.download_fluent_axial_comp()["flprj"]
ds_3 = dpf.DataSources(result_path=result_file_path_3)

# CFX
result_file_path_4 = examples.download_cfx_mixing_elbow()
ds_4 = dpf.DataSources(result_path=result_file_path_4)

Extract all mesh parts — Fluent

Instantiate and evaluate the meshes_provider operator.

meshes_31 = ops.mesh.meshes_provider(data_sources=ds_3).eval()
print(meshes_31)

DPF  Meshes Container
  with 24 mesh(es)
  defined on labels: time zone

  with:
  - mesh 0 {time:  1, zone:  3, } with 429 nodes and 0 elements.
  - mesh 1 {time:  1, zone:  4, } with 429 nodes and 0 elements.
  - mesh 2 {time:  1, zone:  5, } with 187 nodes and 0 elements.
  - mesh 3 {time:  1, zone:  6, } with 187 nodes and 0 elements.
  - mesh 4 {time:  1, zone:  7, } with 425 nodes and 0 elements.
  - mesh 5 {time:  1, zone:  8, } with 425 nodes and 0 elements.
  - mesh 6 {time:  1, zone:  9, } with 204 nodes and 0 elements.
  - mesh 7 {time:  1, zone:  10, } with 204 nodes and 0 elements.
  - mesh 8 {time:  1, zone:  11, } with 68 nodes and 0 elements.
  - mesh 9 {time:  1, zone:  12, } with 68 nodes and 0 elements.
  - mesh 10 {time:  1, zone:  13, } with 7293 nodes and 6080 elements.
  - mesh 11 {time:  1, zone:  16, } with 551 nodes and 0 elements.
  - mesh 12 {time:  1, zone:  17, } with 551 nodes and 0 elements.
  - mesh 13 {time:  1, zone:  18, } with 323 nodes and 0 elements.
  - mesh 14 {time:  1, zone:  19, } with 323 nodes and 0 elements.
  - mesh 15 {time:  1, zone:  20, } with 357 nodes and 0 elements.
  - mesh 16 {time:  1, zone:  21, } with 357 nodes and 0 elements.
  - mesh 17 {time:  1, zone:  22, } with 357 nodes and 0 elements.
  - mesh 18 {time:  1, zone:  23, } with 357 nodes and 0 elements.
  - mesh 19 {time:  1, zone:  24, } with 68 nodes and 0 elements.
  - mesh 20 {time:  1, zone:  25, } with 68 nodes and 0 elements.
  - mesh 21 {time:  1, zone:  26, } with 85 nodes and 0 elements.
  - mesh 22 {time:  1, zone:  27, } with 85 nodes and 0 elements.
  - mesh 23 {time:  1, zone:  28, } with 9367 nodes and 7776 elements.

Extract all mesh parts — CFX

meshes_41 = ops.mesh.meshes_provider(data_sources=ds_4).eval()
print(meshes_41)

DPF  Meshes Container
  with 5 mesh(es)
  defined on labels: time zone

  with:
  - mesh 0 {time:  1, zone:  5, } with 921 nodes and 0 elements.
  - mesh 1 {time:  1, zone:  6, } with 102 nodes and 0 elements.
  - mesh 2 {time:  1, zone:  7, } with 48 nodes and 0 elements.
  - mesh 3 {time:  1, zone:  8, } with 102 nodes and 0 elements.
  - mesh 4 {time:  1, zone:  1, } with 6219 nodes and 15695 elements.

Scope the mesh regions to extract — Fluent

A region corresponds to a zone for Fluid and CFX results. Specify the mesh regions you want to get by passing zone ids to the region_scoping argument.

meshes_32 = ops.mesh.meshes_provider(data_sources=ds_3, region_scoping=[3, 12]).eval()
print(meshes_32)

DPF  Meshes Container
  with 2 mesh(es)
  defined on labels: time zone

  with:
  - mesh 0 {time:  1, zone:  3, } with 429 nodes and 0 elements.
  - mesh 1 {time:  1, zone:  12, } with 68 nodes and 0 elements.

Scope the mesh regions to extract — CFX

meshes_42 = ops.mesh.meshes_provider(data_sources=ds_4, region_scoping=[5, 8]).eval()
print(meshes_42)

DPF  Meshes Container
  with 2 mesh(es)
  defined on labels: time zone

  with:
  - mesh 0 {time:  1, zone:  5, } with 921 nodes and 0 elements.
  - mesh 1 {time:  1, zone:  8, } with 102 nodes and 0 elements.