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Forum: Main CFD Forum

April 13, 2013, 08:54

Replies: 7

Dump question about turbulence viscosity

Views: 1,343

Posted By FMDenaro

well, my concern is about the RANS formulation,...

well, my concern is about the RANS formulation, not about a particular modelling...
In my idea there is no sense in a statistical RANS formulation wherein you have simultaneously laminar,...

Forum: Main CFD Forum

April 12, 2013, 03:21

Replies: 7

Dump question about turbulence viscosity

Views: 1,343

Posted By FMDenaro

I don't think is correct to simulate a...

I don't think is correct to simulate a transitional flow with RANS formulation...

Forum: Main CFD Forum

April 2, 2013, 14:05

Replies: 7

Dump question about turbulence viscosity

Views: 1,343

Posted By FMDenaro

for inviscid flows, you can think of turbulence...

for inviscid flows, you can think of turbulence as somehow analoug of the shock-wave discontinuity: there is no mesh size able to resolve.
In other words, DNS is not realizable for inviscid flows...

Forum: Main CFD Forum

April 2, 2013, 13:31

Replies: 7

Dump question about turbulence viscosity

Views: 1,343

Posted By FMDenaro

some suggestions to help in your understanding: ...

some suggestions to help in your understanding:

- in RANS v' is the residual defined by v(x,t) - <v>(t) and does not depends on the mesh size but depends on the statistical average.
- for...

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