******************* This email from sgepner@meil.pw.edu.pl originated outside Imperial. ******************* Hi Josuel, I would suggest using the Standard Driver and time integrate to the steady state solution. In my experience this is faster and easier to do than to use the SFD method. Possibly, someone has had success with the SteadyState driver and can share a secret? Cheers, Stan On pon, 2019-12-02 at 21:37 -0500, Josuel Kruppa Rogenski wrote:
******************* This email from josuelkr@gmail.com originated outside Imperial. ******************* Dear Nektar users,
I am doing some tests using IncNavierStokes solver + steady driver (with default parameters) + periodic boundary conditions.
I wonder if someone has to take some extra care if one of the boundaries is similar to a sawtooth wave, as an example.
Specifically, I took initially a 2D-Couette flow. After that, I substituted one of the flat walls to a tilted small square step. Results seems to be nonphysical. I played with different meshes and time integration methods but could not draw any conclusion.
My .xml file solver info is: <SOLVERINFO> <I PROPERTY="SolverType" VALUE="VelocityCorrectionScheme"/> <I PROPERTY="TimeIntegrationMethod" VALUE="IMEXOrder2"/> <I PROPERTY="EQTYPE" VALUE="UnsteadyNavierStokes"/> <I PROPERTY="AdvectionForm" VALUE="Convective"/> <I PROPERTY="Projection" VALUE="Galerkin"/> <I PROPERTY="Driver" VALUE="SteadyState"/> </SOLVERINFO>
<EXPANSIONS> <E COMPOSITE="C[0]" NUMMODES="12" TYPE="MODIFIED" FIELDS="u,v,p" /> </EXPANSIONS>
Any help would be appreciated. Thank you in advance, J
PS: I can provide .xml and .geo files I am working with if necessary. _______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk https://mailman.ic.ac.uk/mailman/listinfo/nektar-users