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Forum: CFX

September 19, 2011, 10:07

Replies: 4

"du/dy" by "CEL" expression

Views: 2,205

Posted By sajad_abasi

sure. i want to set slip velocity condition on...

sure.
i want to set slip velocity condition on walls and the formula is the maxwell-smoluchowski first order slip condition in this form:
us-uw=((2-alfa)/alfa)*landa*du/dy
so i need to have u...

Forum: CFX

September 18, 2011, 10:53

Replies: 4

"du/dy" by "CEL" expression

Views: 2,205

Posted By sajad_abasi

hi Glenn can i use this formula "u.gradiant y"...

hi Glenn
can i use this formula "u.gradiant y" in pre processing?
i want to set it as a boundary condition.i mean that my B.C is in dependent of "du/dy".
so can i define CEL expression and use it...

Forum: CFX

September 14, 2011, 19:44

Replies: 4

"du/dy" by "CEL" expression

Views: 2,205

Posted By sajad_abasi

"du/dy" by "CEL" expression

hi all.
i want to calcuate derivative of u velocity with respect to normal cordinate.i mean that i want "du/dy".
is it possible to use "CEL" expression to obtain this quantity?
best regards.

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