[stefank]

Hi,

I am currently simulating flow between two clutch discs. (one flat stationary disc and one rotation (around x) with a complex geometry as seen in the pictures below)
When I want to evaluate the pressure in the flow, I am wondering, why there is such a wide range in the pressure level. In the global range I got values between -990 and +1100 MPa which is not reasonable. I expect maximal values around 20MPa, not more. Reference pressure is set to 1 atm. The pictures show two versions of a streamline. One with a global range for pressure and one with a user specified range.
druck_1_global.jpg
druck_1.jpg

Actually the picture with the user specified range is quite reasonable. But another point which makes me wondering, is, that the torque around x which fluid creates on the solid bodies is around 40 Nm. (inner radius is 59mm)
Does anybody of you have some suggestions why the pressure range is so wide? And how I should interpret these values?
Why is the torque value so big? I expect a value between 0 and 1 Nm.
I hope somebody could help me!
Thanks!