Setting the Temperature of Objects

To set the temperature of objects and to enable feedback for use in two-way coupling:

1. Use the HFSS > Set Object Temperature command to display the Temperature of Objects dialog box. You can also right-click the design in the project tree and select from the shortcut menu.

   This window includes a table of the objects in the design. In order, the table's columns list: object name, material, a check box to show whether each object has temperature-dependent features, Temperature (if applicable), and unit. To enable temperature dependence, you must edit the material properties and include a thermal modifier. See: Specifying Thermal Modifiers.

   

2. To enable editing, select Include Temperature Dependence.

   This makes the table objects selectable. The headers for the Object Name column and the Material column include sort direction arrows. You can invert the sort direction in each column by clicking the header. If the list is longer than the display, a scroll bar will appear.

   You can also use the Select by name field to find objects by name. Enter the name of the object you want and click Select.

   Selected objects are highlighted, and you can make multiple selections.

3. To set the temperature for the selected object(s), type a value or an existing variable name in the text field.
4. Select the units from the drop-down menu.
5. Click Set to apply the value to the selected objects, or click Set Default to make the specified values the default.

   If you click Set Default, the row(s) for the selected object(s) display the temperature value and units.

6. To edit the material for an object, click the object's material to display a drop-down menu.

   

   Click Edit... to display the Materials dialog box.

7. To enable coupling with thermal designs, select Enable Feedback.
   • You can perform two-way coupling between an HFSS, Q3D, or Maxwell design and an Icepak design within the Electronics Desktop. In an Icepak design, you can specify the number of coupling iterations to be run. EM Loss data calculated by the source HFSS, Q3D, or Maxwell design is consumed by Icepak when calculating thermal data in the current coupling iteration. The thermal data is then consumed by the source design in the next coupling iteration's calculation.
   • Alternatively, you can perform thermal static and transient analysis based on a high frequency solution by coupling with other Ansys thermal systems in Ansys Workbench. The solver can then use per mesh element temperatures for the object’s material properties. If Enable Feedback is enabled but feedback is not available, the temperature specified in the dialog is used for the temperature dependent properties in the design.
   Note:

   When Enable Feedback is selected, the right-click menu for Analysis and the analysis setup includes the Revert to Initial Temperature command. Selecting this command invalidates the current solution.

8. To close the dialog box and accept changes, click OK.