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Forum: OpenFOAM Running, Solving & CFD

October 9, 2018, 14:43

Replies: 30

Sudden contration

Views: 2,089

Posted By mAlletto

You should avoid excesive cell volume jumps close...

You should avoid excesive cell volume jumps close to the wall. In my experience introducing some rounding at the edges of the contraction reduces the pressure loss. What are realistic radii achieved...

Forum: OpenFOAM Running, Solving & CFD

October 4, 2018, 03:29

Replies: 30

Sudden contration

Views: 2,089

Posted By mAlletto

you can find a good discussion about wall...

you can find a good discussion about wall function in this thread:

https://www.cfd-online.com/Forums/openfoam-solving/170101-wall-function-usage.html

Forum: OpenFOAM Running, Solving & CFD

October 3, 2018, 07:41

Replies: 30

Sudden contration

Views: 2,089

Posted By mAlletto

Hello, did you try the have prism layers...

Hello,

did you try the have prism layers close to the wall? Usually tetrahedra are too diffusive to accurately solve the wall shear stress close to the wall. Besides this they introduce an...

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