To add this node in any physics interface, click the Show More Options button () and select Equation-Based Contributions in the Show More Options dialog box. Then, in the Model Builder, right-click the main interface node and, depending on the geometric entity level, select More>Weak Contribution at the domain or boundary level, Edges>Weak Contribution, Points>Weak Contribution, or Global>Weak Contribution.
|
When you use a Domain Decomposition (Schwarz) solver with an absorbing boundary condition or shifted Laplace contribution with a physics interface that supports that functionality, one of the following special weak contribution nodes appears: Absorbing Boundary Conditions Weak Contribution, Shifted Laplace Weak Contribution on Main Level, or Shifted Laplace Weak Contribution on Multigrid Levels. They contain weak expressions generated by the solver, and those expressions should normally not be changed.
|