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-   -   reynold number on inlet (http://www.cfd-online.com/Forums/fluent/45037-reynold-number-inlet.html)

Fayyaz Hussain June 15, 2007 04:14

reynold number on inlet
 
Please can any body tell me

" could we give the reynold number on the velocity inlet"

fayyaz

Phil June 15, 2007 09:03

Re: reynold number on inlet
 
Fayyaz,

You can define the turbulence intensity at the inlet which can be calculated from the Reynolds number. Look up boundary conditions/inlets in the user guide to get the equation for this and the hydraulic diameter which you will also input. This is just the diameter of the inlet.

You should select turbulence specification method as 'intensity and hydraulic diameter' at the velocity inlet window, then input your calculated numbers.

As far as I know this is the only way to do it but you could write a UDF to allow you to use any variable. The UDF would be written to use an equation to convert any value to the required format.

Phil

Fayyaz Hussain June 18, 2007 12:24

Re: reynold number on inlet
 
thank you very much phil


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