[sheldonh]

Is it possible to create a particle source that moves/deforms with the mesh?

I am visualising fluid flow in a deforming porous medium, and want to use ParticlePath and ParticleTracer with a line source, forcing reinfection every N steps. The problem is that the line source stays in its original location, whereas the mesh moves, so the origin of the particles does not represent the same location in the mesh as the simulation proceeds.