I am trying to understand, how to work with discontinuous elements. Specifically, I am interested in how dS is defined. So here is what I imagine is the semantics of assemble(f*dS): When performing an integral f*dS, each interior face is visited once. Fenics then does the following: Chooses n, w…

Understanding dS and friends

dokken December 15, 2019, 12:51pm 3

Hi,
See this thread Integrating over an interior surface for how to specify how to restrict arguments to a specific side of the facet.

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