Hi deal.II Community, I am new to the library and I'm trying to implement a prototype Stokes flow solver with tracer particles using shared memory computing. The overall procedure is something like:
1) Solve velocities and pressure analogous to Step-22. 2) Execute coarsening and refinement 3) Interpolate velocities to particles and move particles. What I found is after grid coarsening, the particles which originally belong to the finer grid loses its host cell and an exception is thrown from ParticleAccessor::get_surrounding_cell(). I read through step-19 on Github. From my understanding the implementation there does not involve AMR and therefore such problems do not occur. I also consulted step-68 and 70. Those two implementations use parallel::distributed::Triangulation and attach pre- and post-refinement callback functions to save and reload particles. However in these functions the dynamic_cast from Triangulation to p::d::Triangulation is invalid and returns a nullptr. My question is am I correct to assume that the library does not yet fully support particles on dealii::Triangulation with AMR? If yes can I ask for some guidance on how to implement it myself? One naive way out seems to be to store and reload procedure as is done in the library for p::d::Triangulation, but is it too costly? I really appreciate your time and help. Cheers, Qihang. -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/0c15b74f-a4d7-4a6e-8e3b-711cab4894abn%40googlegroups.com.
