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Self propulsion using starCCM+

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June 30, 2019, 06:19	Self propulsion using starCCM+	#1
bgakhil New Member Akhil Balagopalan Join Date: Apr 2018 Posts: 7 Rep Power: 8	Hi, I was trying to simulate self propulsion test of a container ship using Star CCM+. Currently i am trying with 'propulsive force method'. ie, giving a point load at the CG of the vessel and trying to achieve a certain velocity. When i tick all the 6 DOF of motions in DFBI node under free motion, instead of vessel going in straight line motion it is making a circle. Vessel will go in straight line motion only if i restrict 'y motion' and 'z rotation.' Anyone has any idea why it is making a circle...? CG, moment of inertia everything seems correct.

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