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Forum: OpenFOAM Running, Solving & CFD

August 25, 2018, 07:52

Replies: 10

A big issue in turbulence modeling

Views: 1,328

Posted By Santiago

Considering the mean as a metric for assesing the...

Considering the mean as a metric for assesing the regime in which the solution of the boundary layer lies seems, to say the best, faulty. The mean may fall in the buffer region, maybe leading to the...

Forum: OpenFOAM Running, Solving & CFD

August 24, 2018, 16:26

Replies: 10

A big issue in turbulence modeling

Views: 1,328

Posted By Santiago

Some comments: 1. Conservation error is...

Some comments:

1. Conservation error is rather high, nevertheless not terribile. The problem may come from initial/Boundary conditions. If your objective is having a URANS solution, try using...

Forum: OpenFOAM Running, Solving & CFD

August 24, 2018, 08:37

Replies: 10

A big issue in turbulence modeling

Views: 1,328

Posted By Santiago

1. What do you mean by "near wall" model? All...

1. What do you mean by "near wall" model? All scales of turbulence are modelled in RANS, thus such refining near the wall seems to be counterproductive. Wall functions are needed anyway.

2. Good,...

Forum: OpenFOAM Running, Solving & CFD

August 24, 2018, 05:38

Replies: 10

A big issue in turbulence modeling

Views: 1,328

Posted By Santiago

Couple of things first: why such small y+ for...

Couple of things first: why such small y+ for RANS using wall functions? How is the approach for moving the propeller? Have you tested your grid with potentialFoam?

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