The Transient Thermal system determines temperatures and other thermal quantities that vary over time. The variation of temperature distribution over time is of interest in many applications such as with cooling of electronic packages or a quenching analysis for heat treatment. Also of interest are the temperature distribution results in thermal stresses that can cause failure. In such cases the temperatures from a transient thermal analysis are used as inputs to a static structural analysis for thermal stress evaluations. Many heat transfer applications (such as heat treatment problems, electronic package design, nozzles, engine blocks, pressure vessels, and so on) involve transient thermal analyses.
This analysis is configured in the Mechanical application, which uses the Ansys, ABAQUS, or Samcef solver to compute the solution, depending on which system you have selected.
To work through a Transient Thermal system:
To add a Transient Thermal analysis system, drag the system from the Toolbox to the Project Schematic or double-click the system in the Toolbox.
To load the geometry, right-click the Geometry cell and select from the context menu.
To view the geometry, right-click the Model cell and select from the context menu or double-click the Model cell.
Alternatively, you can complete this step using the Setup cell.
In the Mechanical application window, complete your analysis using the application's tools and features.
See Transient Thermal Analysis for more information on conducting this analysis.
See the Thermal Analysis Guide for more information on thermal analyses using the Mechanical APDL application. For more information on time stepping, see the discussion on General Options.