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NDSolve::fembcib NDSolveValue::fembcib ParametricNDSolve::fembcib ParametricNDSolveValue::fembcib NDEigensystem::fembcib NDEigenvalues::fembcib NDSolve`ProcessEquations::fembcib

NDSolve::fembcib NDSolveValue::fembcib ParametricNDSolve::fembcib ParametricNDSolveValue::fembcib NDEigensystem::fembcib NDEigenvalues::fembcib NDSolve`ProcessEquations::fembcib

Details

  • This message is generated when a DirichletCondition with a positional predicate set to True is used with a mesh with internal boundaries.
  • Off[message] switches off the message; On[message] switches it on. For example, Off[NDSolve::fembcib].

Examples

Basic Examples  (1)

Generate a mesh with internal boundaries:

Visualize the mesh:

Solve a PDE with a DirichletCondition where the dependent variable is set to and the boundary predicate is True:

Visualize the solution:

Note that the inner boundary has also been set to . That is because internal boundaries are also addressable for boundary conditions. In this case, the predicate True that selects to which part of the boundary the condition gets applied is too general. The solution is to restrict the boundary condition to the boundary where it should be applied:

Visualize the solution: