actually I am trying to simulate a river turbine and I followed the following tutorial https://www.simscale.com/docs/tutorials/hex-dominant-rotating-geometries/.

but the force and moment plots I am getting are not seeming to be accurate and they consist of constant lines instead of a curve

can you please tell me where am i going wrong

I am also trying to calculate the values of Cp and Ct. But the values of Moments are increasing as I increase the values of angular velocity from 20,40,60,80 and 100 rpm. But as we see the actual graph of Cp and Ct, the values increase and then decrease which means the values of moments must also increase upto certain rpm and then decrease. Am I right? But here that is not the case

So could you please help me out with this as well?