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-   -   Flow over a rectangular cylinder CD too low (http://www.cfd-online.com/Forums/fluent/85623-flow-over-rectangular-cylinder-cd-too-low.html)

lee557 March 2, 2011 14:55

Flow over a rectangular cylinder CD too low
 
Hi,
I have been trying to simulate the flow over a rectangular cylinder but I still couldn't get the CD close to the results published on paper. I used k-epsilon method to obtain a steady state results before using LES to find the unsteady state.

Boundary Condition :-
Inlet Velocity : 0.32 m/s
Turbulent Intensity : 4.58%
Turbulent Length : 0.07 m

Reynolds Number is 22000

My drag Coefficient is approximately 1.4~1.6 and the CD published on paper was 2.0~2.2.

I attached my fluent mesh file which I uploaded on Megaupload and hope that someone can identifies my mistakes. Thanks in advance

http://www.megaupload.com/?d=8UFLGI3U

Thank you.


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