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Forum: Main CFD Forum

December 2, 2013, 10:21

Replies: 19

Numerical Diffusion in Star and Fluent

Views: 5,210

Posted By FMDenaro

the problem is not simple...the key of your...

the problem is not simple...the key of your question is: does the numerical viscosity overwhelms the molecular one in such a way to affect in a relevant way the solution?

The analsysis and the...

Forum: Main CFD Forum

November 28, 2013, 12:08

Replies: 19

Numerical Diffusion in Star and Fluent

Views: 5,210

Posted By FMDenaro

In Fluent you can set the centred second order...

In Fluent you can set the centred second order scheme, avoiding numerical diffusion produced by the upwind discretization

Forum: Main CFD Forum

November 27, 2013, 16:00

Replies: 19

Numerical Diffusion in Star and Fluent

Views: 5,210

Posted By FMDenaro

second order means nothing... you can have a...

second order means nothing... you can have a central second order as well as an upwind second order...check the exact scheme you are using in time and space

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