Dear Prof. Bangerth, I will have to use arbitrary meshes, because I have solid particles moving in the mesh and
have to refine the mesh adaptively. Later, I will need to move the mesh and even regenerate the mesh if the cells are too distorted. Best, Jiaqi 2016-09-19 23:26 GMT-04:00 Wolfgang Bangerth <bange...@colostate.edu>: > > Jiaqi, > > Yes, I want to extend the solution from the neighboring cells to the >> current >> cell. I know different cells have different polynomial descriptions, >> but in order to apply the limiters, information from the neighbor cells is >> required. Is it possible to extend the solutions from neighbors through >> interpolation? I am not sure how to do that in deal.II. >> > > This is one of those operations that are easy to write down in formulas > and difficult to implement. > > Are you using arbitrary meshes, or rectangular ones? I ask because what > you really want to do is evaluate the solution on one cell at points > *outside this cell*. That's possible, but you will need to know the > reference coordinates of a point on a neighboring cell in the coordinate > system of the current cell. This is simple if you are on a rectangular > mesh, but not so simple in the general case. > > Best > W. > > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bange...@colostate.edu > www: http://www.math.colostate.edu/~bangerth/ > > -- > The deal.II project is located at http://www.dealii.org/ > For mailing list/forum options, see https://groups.google.com/d/fo > rum/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. > For more options, visit https://groups.google.com/d/optout. > -- Jiaqi Zhang Graduate student Department of Mathematics Virginia Tech -- 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. For more options, visit https://groups.google.com/d/optout.
