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Best practices for modeling a rotor/propeller |
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May 14, 2022, 12:57 |
Best practices for modeling a rotor/propeller
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Brett
Join Date: Oct 2018
Posts: 5
Rep Power: 7 |
Hi, I have a 2m span drone propeller/rotor that I'd like to simulate in SolidWorks Flow Simulation 2022. I have experimental data for validation: thrust and torque at various RPMs, as well as some pitot probe data from 15" upstream and downstream - so I'd like to resolve the wake as well as aerodynamic forces.
I have lots of experience with other solvers using body-fitted meshes, but not much experience with SolidWorks. It seems like most of my previous experience does not translate well to FloEFD. I've spent quite a bit of time examining sensitivity to parameters such as computational domain size, rotating region size (I'm using local regions/averaging), local mesh refinement on the propeller, global mesh refinement, and calculation control refinement settings. I'm having a very hard time matching the experimental data - my best prediction so far overpredicts torque by 10% and underpredicts thrust by 15%. I've found some literature using FloEFD on similar simulations where they were able to get a much better match to experiment, so I'm hoping that I'm overlooking something and it's possible to improve my predictions. What I'm finding so far:
Is this consistent with what others have found? If anyone has any recommendations for improving my thrust/torque predictions I would greatly appreciate it. |
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