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Help with calculation of drag coefficent
Posted Jan 9, 2013, 5:21 p.m. EST Computational Fluid Dynamics (CFD) Version 4.3 0 Replies
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I´m having trouble with the obtention of the drag coefficent for a cylinder immersed in a flow. I´ve been able to read the tutorial of this link:
www.comsol.com/showroom/downloadfile/model/97/version/comsol43a/file/models.mph.cylinder_flow.pdf
As you can see, the drag coefificent can be calculated this way:
-reacf(u)*2/(spf.rho*U_mean^2*0.1)
Obviously, I´ve adjusted the equation above in my problem but the drag coefficient doesn´t converge to a value. Don´t get confused, there are no vortexes in the back of the cylinder for this analysis.
Thanks.
Hello Saúl Cortés
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