Hi Amir, Pseudo-time stepping in the dual formulation is undertaken using explicit methods methods which means that your pseudo-dt is restricted by the CFL limit. If you refine your mesh you also need to decrease pseudo-dt.
Cheers, Niki On 14 Sep 2019, at 19:40, Amir Maleki <[email protected]<mailto:[email protected]>> wrote: I have a very simple problem. Flow over a 2D rectangular object. I am using .ini file of the flow over sphere example with some minimal modifications. I have generated three mesh configurations rect_simple.msh, rect_simple_fine.msh and rect_simple_finest.msh using gmsh. The only difference between these three files is size of meshcells. Meshcells are refined using gmsh "Refining by splitting" button. For the two coarser mesh files, the simulations run beautifully, but with the finest one, check_nan fails in the very first test. I use openmp backend. What could be the source of this problem? Is this some limitations of openmp? I have attached mesh files. -- You received this message because you are subscribed to the Google Groups "PyFR Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion on the web, visit https://groups.google.com/d/msgid/pyfrmailinglist/f4b07761-d3bd-4b52-a911-4cb68f0393c9%40googlegroups.com<https://groups.google.com/d/msgid/pyfrmailinglist/f4b07761-d3bd-4b52-a911-4cb68f0393c9%40googlegroups.com?utm_medium=email&utm_source=footer>. <rect_simple.msh><rect_simple_2d.ini><rect_simple_fine.msh><rect_simple_finest.msh> -- You received this message because you are subscribed to the Google Groups "PyFR Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/pyfrmailinglist/9403DB85-18FD-4258-87D5-25A00489B916%40ic.ac.uk.
