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-   -   initial condition for fully developed flow (http://www.cfd-online.com/Forums/cfx/78913-initial-condition-fully-developed-flow.html)

kmgraju August 5, 2010 12:46

initial condition for fully developed flow
 
I am analyzing 3D flow . I would like to give the inlet velocity profile as a paraboloid as the fully developed condition. The flow in the Z direction .
According to the theory U= (1/4 μ )*(dp/dz)*(r^2-R^2). Any one give me a suggestion about the fully developed velocity profile.How I can write the above expression.

I am the leaner of CFX . Kindly help me how to write CEL Expression.

ghorrocks August 5, 2010 19:17

The expression is trivial, you only need to look up the documentation for the variable name for dp/dz. If you look in the CEL reference guide you will find its variable name is "dp-dZ".

kmgraju August 5, 2010 21:47

Hai Mr. Glenn Horrocks

I could not find the variable (dp/dz) in CFX reference document. can you help me how to write dp/dz in the CEL expression.
Thank you

ghorrocks August 6, 2010 05:57

Have another look in the documentation, it is there. While you are at it, have another look at my post too - I already said the variable is called "dp-dZ".


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