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Forum: Main CFD Forum August 19, 2020, 06:04
Replies: 39
Views: 122,067
Posted By arjun
They most of the time pain in unsteady too. ...

They most of the time pain in unsteady too. During my time at CD Adapco I learned that most people avoid the coupled solver, which is basically what we call density based solver (written to solve...
Forum: Main CFD Forum August 19, 2020, 05:47
Replies: 39
Views: 122,067
Posted By arjun
Nonetheless they are of different class of...

Nonetheless they are of different class of algorithm.

I believe that the places they will be used the explicit nature makes sense and in fact could be advantage over the "most modern" algorithms....
Forum: Main CFD Forum August 18, 2020, 17:32
Replies: 39
Views: 122,067
Posted By arjun
Yes. Pressure based solvers are mainly...

Yes.

Pressure based solvers are mainly solving pressure poisson equation as you noted.
Forum: Main CFD Forum August 18, 2020, 11:03
Replies: 39
Views: 122,067
Posted By arjun
I think the issue is that most people use the...

I think the issue is that most people use the solvers you have mentioned as they can deal with large number of cases. The density based solvers are used in high speed compressible flows that is much...
Forum: Main CFD Forum August 18, 2020, 10:52
Replies: 39
Views: 122,067
Posted By arjun
BTW in wildkatze you can chose ROE fluxes and...

BTW in wildkatze you can chose ROE fluxes and thus it can sort of behave similar to density based solver as far as flux dissipation goes. (instead of Rhie and Chow).
Forum: Main CFD Forum August 18, 2020, 10:49
Replies: 39
Views: 122,067
Posted By arjun
By special solver you mean they are density based...

By special solver you mean they are density based solver. They are different class of solver. They usually get the flux by ROE, AUSM or other such schemes.


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Forum: Main CFD Forum August 18, 2020, 09:34
Replies: 39
Views: 122,067
Posted By arjun
Rho central foam in my understanding solves for...

Rho central foam in my understanding solves for density and obtains pressure from it.


The blast foam library based on / using it also does the same.
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