Steady Thermal Analysis
You can use steadystate thermal analyses to calculate the thermal response to heat loads depending on the prescribed temperatures or applied convection conditions or both. Steadystate thermal analyses assume a steadystate for all thermal loads and boundary conditions. This form of analysis does not evaluate changes over time.
For a description of and requirements for steadystate thermal analysis, see
Steady Thermal Analysis Overview.
The following items are available on the Steady Thermal Analysis Definition dialog box:
You can run a nonlinear steadystate thermal analysis for models with the following characteristics:
◦ temperaturedependent thermal conductivity
◦ temperaturedependent convection coefficients
◦ radiation conditions
For any of these models the Nonlinear / Use Load Histories check box is selected automatically and the relevant cause of nonlinearity is highlighted.
• Constraints—Allows you to select one or more constraint sets for an analysis.
• Loads—Allows you to select one or more load sets for an analysis. This is optional.
• Initial Temperature—Specifies the initial temperature of the model. This is the temperature of the model before loads and other boundary conditions become active. Select the units of temperature from the adjacent dropdown list or use the default principal system of units.

This text box is visible only if the Nonlinear / Use Load Histories check box is selected and nonlinearities are present in the model.

The following tabs appear on the Steady Thermal Analysis Definition dialog box: