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-   -   DNS solver confusion (http://www.cfd-online.com/Forums/openfoam-solving/95298-dns-solver-confusion.html)

jiejie December 13, 2011 00:22

DNS solver confusion
 
Dear fomers

I have been using pisoFoam for high Reynolds number flow over a cylinder simulations. At the moment, I am trying to run some low Reynolds number cases with a DNS solver. The dnsFoam is for box turbulence case with extra forcing term in it. However, I lloked at the icoFoam source file and it seems quite similar to the dnsFoam without the forcing. Does this mean icoFoam is a DNS solver or I am completely wrong?

Thanks

stevenvanharen December 13, 2011 06:14

icoFoam is a solver without any modelling for turbulence.

So it can be used for a laminar flow, or for a DNS. However, it will of course only be a DNS if your mesh will allow this etc. etc.

jiejie December 13, 2011 19:37

Quote:

Originally Posted by stevenvanharen (Post 335651)
However, it will of course only be a DNS if your mesh will allow this etc. etc.

Hi stevenvanharen, Thanks for the speedy reply. Regarding to the mesh, you are saying it will only be a DNS is the mesh is designed for a DNS simulation?

Thanks

stevenvanharen December 14, 2011 09:46

yes, that is what I am saying

ooo February 3, 2014 16:57

should we except exactly same result if we solve a laminar case by icoFoam and dnsFoam?
Because there is an extra source term in dnsFoam...


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