) and select Advanced Physics Options in the Show More Options dialog box. The Constraint settings can be set to Pointwise constraints (default), Weak constraints or Nitsche constraints. Select Weak constraints to replace the standard constraints with a weak implementation. Select Nitsche constraints when Pointwise constraints and Weak constraints do not work satisfactorily.
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The Nitsche constraints option is especially useful to prevent oscillations on inlet boundaries where convection dominates. Unlike the Pointwise constraints and Weak constraints, these constraints do not enforce the temperature on the boundary extremities. This is relevant on fluid inlets where the temperature condition should not be enforced on the walls at the inlet extremities. Note that Nitsche constraints are not supported for resistive thin layers or with turbulent wall functions.
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You can specify a harmonic variation of the temperature value in a frequency domain analysis of perturbation type, by adding a Harmonic Perturbation subnode. See Theory for Harmonic Heat Transfer for more details.
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Steady-State 2D Axisymmetric Heat Transfer with Conduction: Application Library path Heat_Transfer_Module/Tutorials,_Conduction/cylinder_conduction
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