Reference values set up Plz help!
 

Hi everybody!

I'm modeling the flow around the circular cylinder (3D) and when I set up the reference values, I confused about its values. I'm using the circular cylinder with diameter D=1 and its long is L=3. In addition the density and viscousity of fluid are changed. So, What should I do in Reference part for Area, length...And they have some effects on CD and CL? Somebody can recommand to me about it!

Thanks in advanced!

Pah