Simulate with complex geometries and complex physics
removeOuterShell{
for shell geometry given by two closed surfaces, remove outer surface
For the simulation of the fluid dynamics inside a closed container, only the inner boundary of the container, facing the fluid domain, is required in MESHFREE. If the geometry file to be used contains the complete description of the container as two closed surfaces (shells), then the outer, unneccessary, one should be removed to save time in the point cloud organisation part of the simulation. MESHFREE can do this automatically with removeOuterShell{ factor }.
The parameter factor, chosen between 0 and 1, is used to check whether the volumes enclosed by the two surfaces are close enough to each other for a shell description of the geometry, that is, the outer shell is only removed if \begin{align} V_\text{inside} \ge \text{factor}\cdot V_\text{outside}\end{align}
Example:
begin_boundary_elements{}
include{FileName} removeOuterShell{ factor }
...
manipulate{"AliasName"} removeOuterShell{ factor }
...
end_boundary_elements