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September 5, 2016, 03:41 |
Wrong oscillatory torque of a water wheel
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#1 |
Senior Member
Join Date: Oct 2014
Posts: 124
Rep Power: 11 |
Hello members.
I am simulating a water wheel, and I succeeded in the past, but with this water wheel I have got one problem. The shaft torque oscillates during the time, but the oscillation period is not the frequency of the rotating wheel (the wheel is made of 12 blades), but very very small! Probably it is a numerical error. I have tried with different time steps, but this oscillation still remains. In attach there is a Figure. Thank you! |
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September 5, 2016, 07:06 |
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#2 |
Senior Member
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23 |
Could you check If the moment center is same as center of the wheel?
Last edited by vasava; September 5, 2016 at 07:31. Reason: grammer |
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September 5, 2016, 10:29 |
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#3 |
Senior Member
Join Date: Oct 2014
Posts: 124
Rep Power: 11 |
Thank you very much.
Yes, it is the same. I have tried also using different numerical schemes, but it is always the same... |
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Tags |
oscillation, torque, turbine, water wheel |
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