apply Dirichlet boundary condition on evolving surface ?

9 months ago by
Hi, I am solving crack propagation problem due to hydrogen diffusion. I have applied hydrogen concentration at the edge (simple: DirichletBC), but as the crack grows how can i identify the cell and apply dirichlet boundary condition.  Note: I have a variable (d) which is 1 at the crack surface. how can I check this condition and apply Dirichlet boundary condition ?

Thanks in advance
Community: FEniCS Project
So if I understand correctly, the crack propagates into the domain without altering the mesh and you want to mark the facets as Dirichlet?  You can mark them with FacetFunction

but change the criteria to whatever function evaluation you need.
written 9 months ago by pf4d  
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