How to calculate contact surface and heat flow with the use of PyDpf

Kleanthis

How to calculate contact surface and heat flow with the use of PyDpf

Kleanthis

The script below captures the contact for each element by getting the CONTAC174 element and calculates its contact surface. Afterwards it calculates the heat flux of each element.

A prerequisite for the generation of the contact surface named selection is to add the following APDL command under the desired contact:

my_cont=cid

And the following command object before solution:

/PREP7

ESEL, S, TYPE, , my_cont
CM, PCB_CONT, ELEM
ALLSEL

/SOLU

The PyDPF script is as follows:

from ansys.dpf import core as dpf
from ansys.dpf import core as dpf
from ansys.dpf.core.plotter import DpfPlotter

import numpy as np

"""
Load result file and create model database
"""
ds = dpf.DataSources("file.rth")
model = dpf.Model(ds)

# %%
get_NSs = model.metadata.available_named_selections
print(get_NSs)

# %%
mesh_scoping = model.metadata.named_selection("PCB_CONT_2")
print(mesh_scoping)

# %%
print(get_NSs)

mesh_scoping = model.metadata.named_selection("PCB_CONT_2")
print(mesh_scoping)

# %%
contact_status_op = dpf.operators.result.nmisc(
    # time_scoping=-1,
    mesh_scoping=mesh_scoping,
    # fields_container=my_fields_container,
    # streams_container=my_streams_container,
    data_sources=ds,
    # mesh=my_mesh,
    item_index=41,
    # num_components=my_num_components,
)

print(contact_status_op)

# %%
contact_status_res = contact_status_op.outputs.fields_container()
print(contact_status_res)

# %%
scoping_op = dpf.operators.mesh.from_scoping()
scoping_op.inputs.scoping.connect(mesh_scoping)
scoping_op.inputs.mesh.connect(contact_status_res[0].meshed_region)

my_mesh = scoping_op.outputs.mesh()
print(my_mesh)

# %%
plot = DpfPlotter()
plot.add_field(contact_status_res[0], my_mesh, notebook=False)
plot.show_figure(show_axes=True)

# %%
touch_cond = (contact_status_res[0].data >= 2.)
Nelems_touch = sum(touch_cond)

print("Number of Touching Elements: ", Nelems_touch)
print("Number of Total Elements: ", len(contact_status_res[0].data))

# %%
contact_area_op = dpf.operators.result.nmisc(
    # time_scoping=-1,
    mesh_scoping=mesh_scoping,
    # fields_container=my_fields_container,
    # streams_container=my_streams_container,
    data_sources=ds,
    # mesh=my_mesh,
    item_index=58,
    # num_components=my_num_components,
)

print(contact_area_op)

# %%
contact_area_res = contact_area_op.outputs.fields_container()
print(contact_area_res)

# %%
print(contact_area_res[0].data)

# %%
scoping_op = dpf.operators.mesh.from_scoping()
scoping_op.inputs.scoping.connect(mesh_scoping)
scoping_op.inputs.mesh.connect(contact_area_res[0].meshed_region)

my_mesh = scoping_op.outputs.mesh()
print(my_mesh)

# %%
plot = DpfPlotter()
plot.add_field(contact_area_res[0], my_mesh, show_max=True, show_min=True, notebook=False)
plot.show_figure(show_axes=True)

# %%
contact_heatFlux_op = dpf.operators.result.smisc(
    # time_scoping=-1,
    mesh_scoping=mesh_scoping,
    # fields_container=my_fields_container,
    # streams_container=my_streams_container,
    data_sources=ds,
    # mesh=my_mesh,
    item_index=14,
    # num_components=my_num_components,
)

print(contact_heatFlux_op)

# %%
contact_heatFlux_res = contact_heatFlux_op.outputs.fields_container()
print(contact_heatFlux_res)

# %%
scoping_op = dpf.operators.mesh.from_scoping()
scoping_op.inputs.scoping.connect(mesh_scoping)
scoping_op.inputs.mesh.connect(contact_heatFlux_res[0].meshed_region)

my_mesh = scoping_op.outputs.mesh()
print(my_mesh)

# %%
plot = DpfPlotter()
plot.add_field(contact_heatFlux_res[0], my_mesh, show_max=True, show_min=True, notebook=False)
plot.show_figure(show_axes=True)