Euler's Equations on NEk5000

[Byron Guerrero]

Dear Neks,

I was wondering whether it is possible to solve Euler's Equations in Nek. (i.e. is it possible to get rid of the viscous term of the 3D NSE?).

Best,

Byron

[Jason Hackl]

Potential flow solutions over boundary conditions made up of flow singularities are usually the most interesting solutions to the incompressible Euler equations. I don't know how to set up nek5000 as a potential flow solver, but I'm sure if you search for "potential flow" something will come up.

I wrote an extension to nek5000 for discontinuous Galerkin solution of the compressible Euler equations that was used by the University of Florida for a little while. It was called CMT-nek. and there is still a version of it stuck in master (core/cmt and short_tests/CMT/inviscid_vortex).  An interesting developmental version exploiting some recently discovered features of summation-by-parts operators is still on my GitHub page.

If you are interested in this at all, I can push some major improvements to the artificial viscosity scheme I tried to develop for shock capturing. It still needs some work, but I think nek5000 has potential as a compressible Navier-Stokes solver in the same spirit as the FLEXI project at the University of Stuttgart.

[Light Young]

Dear Byron,

Have you found the answer to this question?   Do you know how to set up nek5000 as a potential flow solver?

Best,

YL