Dear all, I try to add heat flux(Neumann condition) to a surface, while this suface is large and I only want to input heat flux to specific area. Previous, I have successfully add Dirchlet boundary conditions, as shown in below bc_list = [] for i, (x_c, y_c) in enumerate(zip(x_co, y_co), start=1)…

Find the solution to question ‘’ I try to add heat flux(Neumann condition) to a surface, while this suface is large and I only want to input heat flux to specific area. ‘’ The idea is to find commont facets indicies: bc_disc = mesh.locate_entities_boundary( domain, fdim , lambda x: np.iscl…

Apply Neumann boundary condition in a specific area, which is part of a surface

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dokken March 29, 2024, 4:41pm 4

I would use ufl.conditional,
see for instance How to assign boundary conditions based on values of dolfinx.Function - #2 by dokken or Form compilation — FEniCS Tutorial @ Sorbonne

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Apply Neumann boundary condition in a specific area, which is part of a surface

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