### apply Dirichlet boundary condition on evolving surface ?

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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 ?