In the four-chambered heart we define several sidesets - in practice this means that we might want to use a union of boundary ids to describe a single surface. We should add some utilities to make that simpler (after examining how we handle this in FCH).
In the four-chambered heart we define several sidesets - in practice this means that we might want to use a union of boundary ids to describe a single surface. We should add some utilities to make that simpler (after examining how we handle this in FCH).