Abstract
Abstract The optimized distance between skegs and angle of the skeg for a standard twin-skeg type LNG carrier were presented using the CFD and model tests. The evaluation method of self-propulsion performance was derived based on the results of CFD and confirmed the validity through model tests. The analyses to assess self-propu lsion performance using CFD were shown by flow line patterns on the skeg surface, nomin al wake distribution in the propeller plane and the evaluation for flow balance around ster n skegs. The optimized ship that was applied to the optimized two design parameters in ster n skeg arrangement for target ship was derived in this work. Finally speed performance of mother ship which is existing ship and optimized ship were compared through CFD and model tests. And the usefulness about the evaluation method of self-propulsion perfo rmance was reconfirmed. ※Keywords: Twin-skeg ship(쌍축 스케그 선형), Stern skeg(선미 스케그), Flow balance(유동 밸런스), CFD(전산유체역학), Model test(모형시험) 1. 서론
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