Simulation > Creo Simulate > Modeling Structure and Thermal Problems > Thermal Loads > Defining Heat Loads > To Define Heat Loads
To Define Heat Loads
1. Click Home > Heat. The Heat Load dialog box opens.
2. Type a name for the heat load or accept the default name.
3. Select an existing load set from the Member of Set list or click New to create a new load set.
4. Select the type of reference from the References list.
5. Select the geometric entities as references.
6. Depending on the type of entity you selected, provide information for one or both of the following items in the Heat (Q) area:
◦ Distribution—Distributes the load as a total load or as load per unit type.
◦ Spatial Variation—Varies the load uniformly, as a function of coordinates, or as a function of arc length. When you select Function of Coordinates or Function of Arc Length from the drop-down list, the button appears along with a list of functions defined in the model.
Select a function from the list, or click to display the Functions dialog box to define or edit a function.
◦ Temporal Variation—Creates a time-dependent heat load. Select the Time Dependent option from the drop-down list and click . The Function Definition dialog box opens. The Temporal Variation option is not available in FEM mode.
7. To combine spatial and temporal variations, select the Combine Spatial and Temporal Functions check box. Click to open the Function Definition dialog box to define or edit a single function for the spatial and temporal variation of the load.
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The Combine Spatial and Temporal Functions check box is available only if you set Spatial Variation to Function of Coordinates or Function of Arc Length and Temporal Variation to Function of Time.
8. Type a value for the heat transfer rate in the Value box. Select the units from the drop-down list or accept the default unit.
9. Click Preview to preview the defined heat load.
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If you have selected the Combine Spatial and Temporal Functions check box, the Preview Time dialog box opens when you click Preview. Type a non-negative value for time in the Time box. Select the units from the drop-down list or accept the default unit.
10. Click OK.
The loads are applied to all the specified entities and a heat load icon is added to the geometry that you are loading.
Return to About Heat Loads or Heat Loads on Internal Surfaces.