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Mesh motion vs. Frame motion Small-Wind turbine

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Old   November 8, 2018, 17:01
Default Mesh motion vs. Frame motion Small-Wind turbine
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Rafael Radtke
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Hey guys,

I'm simulating a 3d small wind turbine (1,5m diameter) using two ways.

When I simulated the turbine in Steady state using Frame motion I got the result of 11 Nm for the turbine Torque

When I simulated the turbine in Transient state and using Mesh motion I got the result of 9 Nm for the turbine (after the simulation stabilize). Does anyone knows if this is a problem or it could really happen?

Thanks
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Old   November 14, 2018, 04:16
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Gert-Jan
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You need to compare with experiments.


Which software did you use? In CFX, I found differences, although mostly not this large. But it depends on the operation condition and the geometry. So impossible to say.......
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