Hi, I am currently getting
 

Hi,

I am currently getting familiar with OpenFOAM-1.5 and I am trying to create a Cl/Cd plot for a cylinder. I have got a paper to compare my results to and I am having a hard time getting to a proper Result.

I am using Icofoam for a round cylinder and Re=105. There is vortex shedding but the coefficients don't match - they are to high almost twice the Cd.

I played around a lot and the fact, that the same Case with the same Re - number can produce different results on how I choose U and nu was very confusing.

I will upload my files this night and post the links.

Until then I really would like to know if some of you have successfully compared OpenFOAM Coefficients with a paper or an other solver like fluent/cfx using air and what your configuration were for nu.

I would love to summarize every input after we solved this Problem so everyone can profit from it.

yours
harly

Here are the links to my files
 

Here are the links to my files. In this case I used U = 1 and defined nu to fit the Re = 105.

It works pretty well except I cannot evaluate the results - so I want to run the same case with air but when I change the velocity and nu to air I am not getting a proper vortex shedding.

My files:

http://home.arcor.de/daniel.harlacher/www/U
http://home.arcor.de/daniel.harlacher/www/p
http://home.arcor.de/daniel.harlacher/www/controlDict_1
http://home.arcor.de/daniel.harlacher/www/fvSolution
http://home.arcor.de/daniel.harlacher/www/fvSchemes
http://home.arcor.de/daniel.harlache...rtProperties_1

what do I have to change if I want to use air ? (I thought only U and nu, but that didn't work that well...)

Thanks for every suggestion