How to calculate Centroids of a volume mesh using DPF?

Ayush Kumar
Ayush Kumar Member, Moderator, Employee Posts: 470
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edited April 2024 in General Language Questions

How to calculate Centroids of a volume mesh using DPF?

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  • Ayush Kumar
    Ayush Kumar Member, Moderator, Employee Posts: 470
    100 Answers 250 Likes 100 Comments Second Anniversary
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    import mech_dpf
import Ans.DataProcessing as dpf

# ACT Mesh
mesh = ExtAPI.DataModel.MeshDataByName('Global')

# Convert to DPF Mesh
mesh_op = dpf.operators.mesh.acmo_mesh_provider()
mesh_op.inputs.assembly_mesh.Connect(dpf.AnsDispatchHolder(mesh.InternalObject))
dpf_mesh = mesh_op.outputs.getmeshes_container()[0]

# Element volume
el_vol = dpf.operators.geo.elements_volume(mesh=dpf_mesh)

# Get nodes
n_coord = dpf.operators.mesh.node_coordinates(mesh=dpf_mesh)

# Integrate coordinates over element volume
vol_int = dpf.operators.geo.integrate_over_elements(field=n_coord, mesh=dpf_mesh)

# Select Components
vol_int_x = dpf.operators.logic.component_selector(field=vol_int, component_number=0)
vol_int_y = dpf.operators.logic.component_selector(field=vol_int, component_number=1)
vol_int_z = dpf.operators.logic.component_selector(field=vol_int, component_number=2)

# Get centroid fields
cent_x = dpf.operators.math.component_wise_divide(fieldA=vol_int_x, fieldB=el_vol)
cent_f_x = cent_x.outputs.field.GetData()

cent_y = dpf.operators.math.component_wise_divide(fieldA=vol_int_y, fieldB=el_vol)
cent_f_y = cent_y.outputs.field.GetData()

cent_z = dpf.operators.math.component_wise_divide(fieldA=vol_int_z, fieldB=el_vol)
cent_f_z = cent_z.outputs.field.GetData()

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