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전산유체역학을 활용한 자주도하장비 문교 상태의 저항 및 자항 성능 평가
이인수(I. Lee),서정화(J. Seo),석우찬(W. Seok),유재훈(J. Yoo),이강일(K.I. Lee),김도헌(D.H. Kim),이남훈(N. Lee),이성오(S.O. Lee),이신형(S.H. Lee) 한국전산유체공학회 2020 한국전산유체공학회지 Vol.25 No.4
In this study, numerical simulations were conducted for resistance and self-propulsion performance for an amphibious rig in ferry mode. They were performed under conditions of h/T=4.5, 2.0 and head angles of both 180 and 90 degrees using SNUFOAM, based on open source CFD toolkit OpenFOAM. A double body method was adopted for free surface flow. Thrust was modeled with a body force method in self propulsion tests. The results of resistance tests showed drag forces according to the depth and head angle conditions and presented differences in the drag forces. In order to investigate the differences, the pressure, velocity, and vorticity distribution near the amphibious rig were identified. From self propulsion tests results, the thrusts and powers at the self propulsion point were estimated and compared with the thrust diagram to confirm the self propulsion performance.