On Wednesday, November 16, 2016 at 4:40:05 PM UTC-5, Jean-Paul Pelteret wrote: > > Hi Tom, > > An alternative to implemented a complex mesh update strategy is to define > an initial mesh that, when mapped via your Euler vector, produces a higher > quality mesh. For example, you could remove > <https://www.dealii.org/developer/doxygen/deal.II/namespaceGridGenerator.html#ada140ece81bf38a23e738e0e57f89e97> > the > "top" element of the coarse mesh and substitute it > <https://www.dealii.org/developer/doxygen/deal.II/namespaceGridGenerator.html#a843fe2c5c77374c51fcd18f05690b902> > > with a set of elements with an o-grid topology > <https://www.sharcnet.ca/Software/Ansys/17.0/en-us/help/icm_help/graphics/gicm_OGrid_Interpolated.jpg>. > > Of course you would have to have some rough idea as to what your final grid > topology will look like in order to optimise this. > This is interesting.
> By the way, in the images you've shown can you indicate where the low > quality elements are? In Paraview there's a filter that can help with this. > If one considers the mesh on this ellipse as something mapped from a cubic > grid, then I presume you're referring to the elements at the cube corners. > I made those images using visit, but maybe it's time to move to paraview. I'll look for such a function. The grid elements shown in my last figure above may not be pretty, but they may also not be distorted enough to affect accuracy of my solution. The problem I am having is that very soon after those snapshots the solution breaks down completely. I agree with Wolfgang that the tangential motions are killing me. I am looking for very large deformations over time, such as thin tubulations on the scale of the length of the ellipsoid itself. Thank you for continuing this conversation with me, I appreciate it. Tom -- 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.
