Transient Thermal Convergence Method
You can select one of the following convergence methods for Creo Simulate to use when it runs your transient thermal analysis:
• Single-Pass Adaptive—This method is the default.
Creo Simulate runs a first pass at p=3 and determines a time-step reading of the model temperature. Each subsequent time-step uses information from the previous time-step to determine a new p-level.
• Quick Check (No Convergence)—Creo Simulate performs a single-pass analysis with uniform p=3. You can use this method to verify that you have defined your analysis correctly.
Neither of the preceding convergence methods is supported for the following:
• 2D models
• models with shell or beam elements
• models with transversely isotropic or orthotropic materials
• models with links
Transient thermal analyses take longer to run than steady-state thermal analyses. For some runs, you may want to use the Quick Check convergence method to get a quick reading of your model. When you do use the single-pass adaptive convergence method, allow more time for your run.
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 For transient thermal analyses, if you suddenly switch on heat loads and convection conditions, these changes can adversely affect analysis convergence. If all heat loads and convection conditions are smooth functions that are zero at the start of the analysis, the engine will generally select smaller values for the p-orders. For more information on how to smooth these functions, see Ramping of Heat Loads and Convection Conditions. |