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Free rotating propeller problem

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Old   May 13, 2024, 06:48
Question Free rotating propeller problem
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Hello, all.
I have some problems with free rotating screw in a tube which is located inside the ship's hull. The goal is to investigate how much power can we get from the flow from the ship's movement. I have created two regions for the ship and for the screw respectively. I tried to apply both DFBI free motion and one DOF rotating motion. In both cases the screw is rotating in the wrong direction and almost stopping the flow. Does someone know what am I doing wrong? Thank you in advance!

Screenshot 2024-05-13 115322.png

Screenshot 2024-05-13 115533.png

Screenshot 2024-05-13 114205.jpg
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