비정상RANS법과 중첩격자계를 이용한 횡파중 선박운동 수치해석
Numerical Analysis of Ship Motions in Beam Sea Using Unsteady RANS and Overset Grid Methods
2
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
The present paper presents the CFD result for a beam wave test case. An ONR tumblehome ship model with bilge keels is used. The beam wave test is for zero forward speed and roll and heave 2DOF with wave slope ak =0.156 and wavelength λ =1.12LPP , with LPP the ship length. The problems is solved numerically with an unsteady Reynolds averaged Navier-Stokes approach. The free surface flow is computed using a singlephase level-set method and the motions in each time step are integrated using a predictor-corrector iteration approach which uses dynamic overset grids moving with relative ship motion. The predicted CFD results for motions and forces are compared with experimental data, showing a reasonable agreement.
Abstract
The present paper presents the CFD result for a beam wave test case. An ONR tumblehome ship model with bilge keels is used. The beam wave test is for zero forward speed and roll and heave 2DOF with wave slope ak =0.156 and wavelength λ =1.12LPP , with LPP the ship length. The problems is solved numerically with an unsteady Reynolds averaged Navier-Stokes approach. The free surface flow is computed using a singlephase level-set method and the motions in each time step are integrated using a predictor-corrector iteration approach which uses dynamic overset grids moving with relative ship motion. The predicted CFD results for motions and forces are compared with experimental data, showing a reasonable agreement.
참고문헌 (29)
- Ann, S.P, "Analysis of Manoeuvrability of a Ship in Waves by 3- Dimensional Panel Method", Journal of the Society of Naval Architects of Korea, 31(4), pp.82~98 (1994)
- 11-Revision 2.1.5, "PETSc User Manual, ANL-95", pp.2002, Balay, S.
- Beck, R., "Modern Seakeeping Computations for Ships", 23rd ONR symp. on naval hydrodynamics (2001)
- Carrica, P.M., "Ship motions using singlephase level set with dynamic overset grids", Computers & Fluids, 36(9), pp.1415~1433 (2007)
- Carrica, P.M., "Unsteady RANS simulations of the ship forward speed diffraction problem", Computers & Fluids, 35(6), pp.545~570 (2006)
- Cho, I.H., "Wave Responses and Ship Motions in a Harbor Excited by Long Waves (II)", Journal of the Society of Naval Architects of Korea, 30(1), pp.82~98 (1993)
- 조석규, "선박 운동과 내부 유동의 연성 운동에 관한 수치해석 연구", 대한조선학회 논문집, 43(6), pp.631~637 (2006), 대한조선학회
- 조석규, "24th ITTC 손상선박 안정성 수치해석 연구", 대한조선학회 논문집, 42(5), pp.435~447 (2005), 대한조선학회
- Chun, H.H., "Computations of Dynamic Wave Loads of a Catamaran", Journal of the Society of Naval Architects of Korea, 36(2), pp.50~60 (1999)
- Cura, Hochbaum A., "Towards the Simulation of Seakeeping and Maneuvering based on the Computation of the Free Surface Viscous Flow", 24th ONR symp. on naval hydrodynamics (2002)
- Fossen, T.I., "Guidance and Control of Ocean Vehicles" (1994), Wiley
- Francescutto, A., "Roll-sway-heave coupling in beam waves", Proceedings (CD) of 12th International Symposium on Offshore and Polar Engineering - ISOPE'2002, 통권 : 3, pp.281~287 (2002)
- Gong, I.Y., "Linear Time Domain Analysis of Radiation Problems", Journal of the Society of Naval Architects of Korea, 24(4), pp.9~18 (1987)
- Hong, S.Y., "Analysis of Steady and Unsteady Flow Around a Ship Using a Higher-Order Boundary Element Method", Journal of the Society of Naval Architects of Korea, 32(1), pp.42~57 (1995)
- Inglis, R.B., "The Influence of Speed Dependent Boundary Conditions in Three Dimension Ship Motion Problem" (1981), International Shipbuilding Progress
- Issa, R.I., "Solution of the implicit discretized fluid flow equations by operator splitting", Journal of Computational Physics, 62, pp.40~65 (1985)
- Jang, T.S., "A Study on Seakeeping of Container Ships", Journal of the Society of Naval Architects of Korea, 40(3), pp.16~21 (2003)
- 정광효, "사각형 바지선의 횡동요 와류 감쇠에 대한 실험적 연구", 대한조선학회 논문집, 44(3), pp.267~278 (2007), 대한조선학회
- 김진, "자유수면을 포함한 사각기둥의 횡동요 유체동역학 수치해석", 대한조선학회 논문집, 43(6), pp.667~674 (2006), 대한조선학회
- Klemt, M., "RANSE Simulation of Ship Seakeeping using Overlapping Grids", Ship Tech. Res, 52, pp.65~81 (2005)
- Lee, H.Y., "Transient Motion Analyses for a Ship Advancing in Irregular Waves", Journal of the Society of Naval Architects of Korea, 38(3), pp.47~53 (2001)
- Liapis, S., "Seakeeping Computations using Time Domain Analysis", Proc. 4th Int. Conf. Num. Ship Hydrodynamics (1985)
- Menter, F.R., "Two-equation Eddy Viscosity Turbulence Models for Engineering Applications", AIAA J, 32(1), pp.598~605 (1994)
- Noack, R., "SUGGAR: A General Capability for Moving Body Overset Grid Assembly", AIAA paper 2005-5117, 17th AIAA computational fluid dynamics conf. Toronto (2005)
- Olivieri, A., "Beam Sea Tests of Two Different Ship Models in Large Amplitude Regular Waves", Proceedings of the 9th International Conference on Stability of Ships and Ocean Vehicles (2006)
- Orihara, H., "Evaluation of added resistance in regular incident waves by computations fluid dynamics motion simulation using overlapping grid system", J. Mar. Sci. Technology, 8, pp.47~60 (2003)
- 박종천, "중첩 격자계를 이용한 물체운동의 수치 시뮬레이션", 대한조선학회 논문집, 40(5), pp.5~42 (2003), 대한조선학회
- Weymouth, G., "RANS CFD Predictions of Pitch and Heave Ship Motions in Head Seas", J. Ship Res, 49, pp.80~97 (2005)
- Wilson, R.V., "Unsteady RANS simulation of a surface combatant with roll motion", Computers & Fluids, 35(5), pp.419~451 (2006)