Drag on a Cylinder

[Delta1212]

Normally, I don't ask questions on here because I figure Google is probably faster and there is no need to bother people with questions I can easily find the answer to myself. That said, I've had a weirdly difficult time in this case finding an answer to what seems like a relatively straightforward question, so maybe someone here can help me out.

 

I'm trying to find two things, and I'm having the most difficulty with the second. I need to find the drag on a cylinder with a height of 1(unit), or a cylinder with an infinite height or a circle on a 2D plane for a fluid with a given viscosity and density. Any one of the three works.

 

I also need to figure out the rate at which the rotation would be slowed in the same liquid for whichever one of the above three objects I use. This is the one I've had the most difficulty with because everything I've been able to find has been for spheres rather than cylinders.

 

All I need is a set of formulae to solve both problems for one of the three mentioned objects.

[studiot]

It varies with Reynolds No.

 

Here is a graph, dividing the regimes into three after Acheson.