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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Savonius 2D simulation, Cp increasing after stall point › Reply To: Savonius 2D simulation, Cp increasing after stall point

October 11, 2024 at 10:25 am
oe23s006
Subscriber

Sir, I have provided whatever graphs and plots (pressure, velocity, streamlines, validation graph) i have done. I don't know what else to give. The bottomline issue is that in my case, my torque is not dropping after stall point. It should drop.

Before stall, as omega is increased torque also should increase. But after stall omega is increased, torque should decrease to get proper graph (I sould get more back torque). But as seen from the torque graph (green), it should be more even in the other side of the zeroline to get this.

I think many people face this issue but I am not able to figure out why. I have changed models, validation paper, domain, schemes, gradient methods, mesh. I just can't get what I missed. Whatever I do I get the same issue. 

Do I need to change the turbulence model constants or something?

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