[CanadaFlanker]

Hi,

I am simulating a very small hair (diameter of 10 micrometers) in the fluid flow. The flow around it is Stokes flow as the Reynolds number based on the diameter is less than 5. It is unrealistic to make the grid smaller than the diameter in order to capture boundary layer around the hair and obtain drag force; an alternative way is to manually put a drag force on the points where the hair should be, as the drag force can be calculated from Stokes flow. Is there a way to apply a force at a point in CFX? I have searched about sources but it seems that source points don't have force or momentum, and the only place where I can put momentum source is subdomain. If anyone knows whether CFX can do it please let me know, otherwise I will switch to other software such as OpenFoam. Thank you.