All,

I am trying to complete a simple steady state thermal analysis. However, I would like to use an initial temperature for theassembly. When I pick Temperature from the Load/Restraintsection, the only option available is just Temperature. So, Iselect all my components and set them to a temperature. However, the results are all at that temperature with nothermal gradiants across the part. If I remove thetemperature load/restraint, I get the gradiant, but the overallsteady state temp can not be correct.

How can I define a steady state initial temperature for myassembly?

Thank you,

Kevin

I am trying to complete a simple steady state thermal analysis. However, I would like to use an initial temperature for theassembly. When I pick Temperature from the Load/Restraintsection, the only option available is just Temperature. So, Iselect all my components and set them to a temperature. However, the results are all at that temperature with nothermal gradiants across the part. If I remove thetemperature load/restraint, I get the gradiant, but the overallsteady state temp can not be correct.

How can I define a steady state initial temperature for myassembly?

Thank you,

Kevin

You can't apply initial conditions for a steady state problem. "Initial" implies there is a time component to the study. You can only apply boundary conditions in a steady state problem. The temperature B.C. sets the face selected to a constant temperature (isothermal). In a steady state problem, if you apply a temperature to one surface of a part and dont have any heat transfer in or out, the entire part will eventually reach the temperature that is applied to the surface. The temperature B.C. for a steady state thermal analysis will be used for isothermal conditions like boiling water on one side of a heat exchanger.

Hope this helps.