I am very new to OpenLB and LBM methods in general, so please excuse me if my question is too trivial.
I am simulating a flow through a 3d cylinder and the surface of the cylinder is imported through a STL file. When I write the output to VTK, the domain comes in the form of a parallelepiped (or in other words, the voxels outside the cylindrical STL surface, which are the ‘0’ voxels are also saved. Is there a way to exclude these cells while writing the VTK output, so that the ‘boundary’ of the cylinder is visible in the output data?
Thanks and regards,