Hello every body, is there any way to compute surface integrals over interior surface? For example if I had a sphere inside a cube, how it is possible to consider only the sphere surface instead of dx which consider the entire volume?

Integration over subdomain

dokken January 15, 2022, 5:27pm 2

You should use dS with an appropriate mesh function and a volume marker to have a consistent restriction of the “+” and “-”. See: Integrating over an interior surface - #4 by MiroK

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