Hi, I’ve been working on this problem where I have a PDE on an interface and I’m using dS in FEniCS for integration. But, the results are kind of off. What’s interesting is that when I switch the PDE to be on the boundary and use ds instead, everything works fine. This makes me think there’s somet…

[image] deshik: Then i have my weak form as, res_s = res_s + inner(P,grad(v)("+"))*dS(FLAG_INTERFACE) This weak form gave me bad results. (All the discontinuous parameters required for defining P are restricted appropriately.) See: Integrating over an interior surface - #4 by MiroK and fo…

Issues with integration on interior boundary (dS)

Legacy DOLFIN

dokken January 26, 2024, 2:18am 2

See: Integrating over an interior surface - #4 by MiroK

and for any further questions please make a minimal reproducible example.

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Issues with integration on interior boundary (dS)

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