선수부 갑판침입수의 수치시뮬레이션에 대한 기초연구
A Fundamental Study for the Numerical Simulation Method of Green Water Occurrence on Bow Deck
2
조회
0
다운로드
12
인용
0
참고문헌
키워드
초록
Green water load is an important parameter to be considered in designing a modern ship or offshore structures like FPSO and FSRU. In this research, a numerical simulation method for green water phenomenon is introduced. The Navier-Stokes equations and the continuity equation are used as governing equations. The equations are calculated using Finite Difference Method(FDM) in rectangular staggered grid system. To increase the numerical accuracy near the body, the Cartesian cut cell method is employed. The nonlinear free-surface during green water incident is defined by Marker-density method. The green waters on a box in regular waves are simulated. The simulation results are compared with other experimental and computational results for verification. To check the applicability to moving ship, the green water of the ship which is towed by uniform force in regular wave, is simulated. The ship is set free to heave and to surge.
Abstract
Green water load is an important parameter to be considered in designing a modern ship or offshore structures like FPSO and FSRU. In this research, a numerical simulation method for green water phenomenon is introduced. The Navier-Stokes equations and the continuity equation are used as governing equations. The equations are calculated using Finite Difference Method(FDM) in rectangular staggered grid system. To increase the numerical accuracy near the body, the Cartesian cut cell method is employed. The nonlinear free-surface during green water incident is defined by Marker-density method. The green waters on a box in regular waves are simulated. The simulation results are compared with other experimental and computational results for verification. To check the applicability to moving ship, the green water of the ship which is towed by uniform force in regular wave, is simulated. The ship is set free to heave and to surge.
참고문헌 (15)
- Buchner, B, "Green Water on Ship-type Offshore Structures", 박사, pp.2002
- 최상현, "구조물에 작용하는 쇄파의 속도장 측정", 대한조선학회 논문집, 42(6), pp.559~565 (2005), 대한조선학회
- Drake, K.R, "Wave Profile Characterisation of Green Water Loading Events Form Model Test Data", Applied Ocean Research, 23, pp.187~193 (2001)
- Ferziger, J.H, "Computational Methods for Fluid Dynamics" (2002), Springer
- Han, J.C, "Basic Study of Grimm's Algorithm for Green Water Simulation", Int. J. Navigation and Port Research, 28(9), pp.809~813 (2004)
- Hirt, C.W, "Volume of Fluid(VOF) Method for the Dynamics of Free Boundaries", J. Computational Physics, 39, pp.201~225 (1981)
- 신기석, "규칙파 중 선수갑판 Green Water에 대한 수치계산 및 실험", 대한조선학회 논문집, 42(4), pp.350~356 (2005), 대한조선학회
- Kirkpatrick, M.P, "A Representation of Curved Boundaries for the Solution of the Navier-Stokes Equations on a Staggered Three-dimensional Cartesian Grid", J. Computational Physics, 184, pp.1~36 (2003)
- Lee, Y.G, "A Finite Difference Simulation Method for the Viscous Flow with Free-surface by Using Rectangular Coordinate Systems", 박사, pp.1989
- 이영길, "밀도함수법을 이용한 2차원 슬로싱 현상의 수치시뮬레이션", 대한조선학회 논문집, 46(6), pp.650~658 (2009), 대한조선학회
- Pham, X.P, "Evaluation of Green Water Loads on High-speed Oontainership Using CFD", Ocean Engineering, 32, pp.571~585 (2005)
- Ryu, Y., "Application of Dam-break Flow to Green Water Prediction", Applied Ocean Research, 29, pp.128~136 (2007)
- Shibata, K, "Numerical Analysis of Coupling between Ship Motion and Green Water on Deck Using MPS Method", Proceedings of International Conference on Violent Flows (2007)
- Yamasaki, J, "Finite-defference Simulation of Green Water Impact on Fixed and Moving Bodies", J. Marine Science and Technology, 10, pp.1~10 (2005)
- Zhu, R, "Numerical Research on FPSOs with Green Water Occurrence", J. Ship Research, 53, pp.7~18 (2009)