Icepak: Creating blocks and assigning materials and power

This example shows how to create different types of blocks and assign power and material to them using a *.csv input file

Perform required imports

Perform required imports including the operating system, regular expression, csv, Ansys PyAEDT and its boundary objects.

import os
import re
import csv
from collections import OrderedDict
import pyaedt
from pyaedt.modules.Boundary import BoundaryObject

Set AEDT version

Set AEDT version.

aedt_version = "2024.1"

Set non-graphical mode

Set non-graphical mode. You can set non_graphical either to True or False.

non_graphical = False

Download and open project

Download the project, open it, and save it to the temporary folder.

temp_folder = pyaedt.generate_unique_folder_name()

ipk = pyaedt.Icepak(projectname=os.path.join(temp_folder, "Icepak_CSV_Import.aedt"),
                    specified_version=aedt_version,
                    new_desktop_session=True,
                    non_graphical=non_graphical
                    )

ipk.autosave_disable()

# Create the PCB as a simple block.
board = ipk.modeler.create_box([-30.48, -27.305, 0], [146.685, 71.755, 0.4064], "board_outline", material="FR-4_Ref")

C:\actions-runner\_work\_tool\Python\3.10.9\x64\lib\subprocess.py:1072: ResourceWarning: subprocess 4528 is still running
  _warn("subprocess %s is still running" % self.pid,
C:\actions-runner\_work\pyaedt\pyaedt\testenv\lib\site-packages\pyaedt\generic\settings.py:383: ResourceWarning: unclosed file <_io.TextIOWrapper name='D:\\Temp\\pyaedt_ansys.log' mode='a' encoding='cp1252'>
  self._logger = val

Blocks creation with a CSV file

The CSV file lists the name of blocks, their type and material properties. Block types (solid, network, hollow), block name, block starting and end points, solid material, and power are listed. Hollow and network blocks do not need the material name. Network blocks must have Rjb and Rjc values. Monitor points can be created for any types of block if the last column is assigned to be 1 (0 and 1 are the only options).

The following image does not show the entire rows and data and only serves as a sample.

In this step the code will loop over the csv file lines and creates the blocks. It will create solid blocks and assign BCs. Every row of the csv has information of a particular block.

filename = pyaedt.downloads.download_file('icepak', 'blocks-list.csv', destination=temp_folder)

with open(filename, 'r') as csv_file:
    csv_reader = csv.DictReader(csv_file)
    for row in csv_reader:
        origin = [float(row["xs"]), float(row["ys"]), float(row["zs"])]  # block starting point
        dimensions = [float(row["xd"]), float(row["yd"]), float(row["zd"])]  # block lengths in 3 dimensions
        block_name = row["name"]  # block name

        # Define material name
        if row["matname"]:
            material_name = row["matname"]
        else:
            material_name = "copper"

        # creates the block with the given name, coordinates, material, and type
        block = ipk.modeler.create_box(origin, dimensions, name=block_name, material=material_name)

        # Assign boundary conditions
        if row["block_type"] == "solid":
            ipk.assign_solid_block(block_name, row["power"] + "W", block_name)
        elif row["block_type"] == "network":
            ipk.create_two_resistor_network_block(block_name,
                                                  board.name,
                                                  row["power"] + "W",
                                                  row["Rjb"],
                                                  row["Rjc"])
        else:
            ipk.modeler[block.name].solve_inside = False
            ipk.assign_hollow_block(block_name, assignment_type="Total Power", assignment_value=row["power"] + "W",
                                    boundary_name=block_name)

        # Create temperature monitor points if assigned value is 1 in the last column of the csv file
        if row["Monitor_point"] == '1':
            ipk.monitor.assign_point_monitor_in_object(
                row["name"],
                monitor_quantity="Temperature",
                monitor_name=row["name"])

C:\actions-runner\_work\pyaedt\pyaedt\testenv\lib\site-packages\pyaedt\modeler\modeler3d.py:56: DeprecationWarning: The property `primitives` is deprecated.
 Use `app.modeler` directly to instantiate primitives methods.
  warnings.warn(mess, DeprecationWarning)

Release AEDT

Release AEDT.

ipk.release_desktop(True, True)

True