Hi Niki, This solved the NaN problem, thank you. So for stability related to the CFL number i can only refer to the pseudo dt, keeping it it low enough, and keep dt arbitrary? Or what other restriction I have to impose?
Thank you, Giulio Il giorno lunedì 13 gennaio 2020 15:34:19 UTC+1, Niki Loppi ha scritto: > > Hi Giulio, > > Thanks for your interest. > > The pseudo-time step size (pseudo-dt) is restricted by the explicit CFL > limit. You seem to be running the case with higher Re and your mesh > probably contains smaller elements than the inc_2d_cyl case, so you need > decrease pseudo-dt for the simulation to remain stable. > > Cheers, > > Niki > > On 13/01/20 08:25, Giulio Ortali wrote: > > This email from [email protected] <javascript:> originates from outside > Imperial. Do not click on links and attachments unless you recognise the > sender. If you trust the sender, add them to your safe senders list > <https://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email > stamping for this address. > > > Hello everyone, > I am new to pyfr, and i need to use it in order to generate some high > fidelty data on a 2D incompressible airfoil problem. I tried replicating > the inc_2d_cylinder case by changing the mesh, generated using gmsh. > However, when i launch the run, I obtain all NaN in all the domain after > the first timestep, and i don't understand why. I upload the geo, msh and > ini files. > > Thank you in advance, > Giulio > -- > 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] <javascript:>. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/pyfrmailinglist/728f6aa9-f822-4467-9256-15d3660fbd14%40googlegroups.com > > <https://groups.google.com/d/msgid/pyfrmailinglist/728f6aa9-f822-4467-9256-15d3660fbd14%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- 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/7a6e011a-4798-4ce4-b421-5f1ad28ff662%40googlegroups.com.
