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RISS 인기검색어
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- 저자 : 이인수(I. Lee) (검색결과 40 건)
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이인수(I.S. Lee),임효남(H.N. Im),최재웅(J.W. Choi) 한국전산유체공학회 2011 한국전산유체공학회 학술대회논문집 Vol.2011 No.5
The purpose of this sutdy is to evaluate a defrost model for the possibility of defrosting on wheelhouse window and the heat apacity of defrosting nozzle by using the commercial CFD solver FLUENT. A detailed simulation model has been created which contains the defrosting nozzle, window and the interior/exterior forced convection boundary. In this numerical study, the heat and mass transfer coupled during defrosting and investigated the defrost time for different hot gas temperature, external wind speed and temperature condition.
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해석 기법에 따른 KVLCC2 선형의 저항 및 사항 시험에 관한 비교 연구
이인수(I. Lee),석우찬(W. Seok),여홍구(H. Yeo),조용재(Y.J. Cho),이신형(S.H. Rhee) 한국전산유체공학회 2020 한국전산유체공학회지 Vol.25 No.1
In this study, comparative studies between double-body and VOF methods were performed using SNUFOAM, specialized in fluid dynamics problems in naval architecture and ocean engineering.Although the double-body method is more efficient in terms of computational resources than the VOF method, but free surface effect was ignored. For comparative studies, resistance tests and static drift tests at drift angle 4° and 12° for a KVLCC2 was conducted. They showed differences in forces and moments and pressure, wall shear stress and skin friction lines were identified to investigate the differences.
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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.
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