Schlieren Post Processing of Hydrodynamics Simulations

[biagas]

We're trying to combine visit-users email list with GitHub issues. When replying on visit-users, please reply only to emails with a Subject line that includes [visit-dav/live-customer-response].

---

Does anyone know about a way to post process density results from hydrodynamics simulations in VisIT to get simulated Schlieren images? the manual is silent on this capability.

Thanks,

Rick

[biagas]

Response from Tomek Plewa

Use Controls -> Expression to create a mesh variable; in 2D,

constAexp(constBmagnitude(ij_gradient())

Tomek

Rick indicated Tomek's solution worked.

[cyrush]

depending on the mesh type ,the ij gradient isn't a good choice -- it doesn't calc the right dx, dz, dy factor -- I would compare against the standard gradient.

[cyrush]

well not the mesh type, but the nature of the mesh. Depends on how dx,dy,dz compare to logical deltas.