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大韓造船學會 論文集 = Journal of the Society of Naval Architects of Korea v.47 no.3=no.171, 2010년, pp.291 - 305   피인용횟수: 1
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3 차원 시간영역 근사비선형 2 차경계요소법에 의한 선체의 대진폭 운동 및 파랑하중 계산
Estimation of Large Amplitude Motions and Wave Loads of a Ship Advancing in Transient Waves by Using a Three Dimensional Time-domain Approximate Body-exact Nonlinear 2nd-order BEM

홍도천    (충남대학교 첨단수송체연구소   ); 홍사영    (한국해양연구 원 해양시스템안전연구소   ); 성홍근    (한국해양연구 원 해양시스템안전연구소  );
  • 초록

    A three-dimensional time-domain calculation method is of crucial importance in prediction of the motions and wave loads of a ship advancing in a severe irregular sea. The exact solution of the free surface wave-ship interaction problem is very complicated because of the essentially nonlinear boundary conditions. In this paper, an approximate body nonlinear approach based on the three-dimensional time-domain forward-speed free-surface Green function has been presented. The Froude-Krylov force and the hydrostatic restoring force are calculated over the instantaneous wetted surface of the ship while the forces due to the radiation and scattering potentials over the mean wetted surface. The time-domain radiation and scattering potentials have been obtained from a time invariant kernel of integral equations for the potentials which are discretized according to the second-order boundary element method (Hong and Hong 2008). The diffraction impulse-response functions of the Wigley seakeeping model advancing in transient head waves at various Froude numbers have been presented. A simulation of coupled heave-pitch motion of a long rectangular barge advancing in regular head waves of large amplitude has been carried out. Comparisons between the linear and the approximate body nonlinear numerical results of motions and wave loads of the barge at a nonzero Froude number have been made.


  • 주제어

    시간영역 근사비선형 선체운동 및 파랑하중 .   전진속도 충격응답함수 .   3 차원 시간영역 전진속도 자유표면 그린함수 .   시간영역 Green 적분방정식 .   전진속도 운동이력함수 .   2 차경계요소법.  

  • 참고문헌 (16)

    1. Beck, R.F. and Liapis, S.J., 1987. Transientmotion of floating bodies at zero forward speed.J. of Ship Research, Vol. 31-3, pp. 164-176. 
    2. Bingham, H.B., Korsmeyer, F.T., Newman, J.N.and Osborne, G.E., 1993, “The Simulations ofShip Motions,” Proceedings, 6th Int. Conf. onNumerical Ship Hydrodynamics, pp. 561-579. 
    3. Gerritsma, J. 1988. Motions, wave loads andadded resistance in waves of two Wigley hullforms. Rep.No.804, Delft Univ. of Technology,The Netherlands. 
    4. Gong, I. Y. 1987. Time domain analysis ofhydrodynamic forces acting on threedimensional bodies (in Korean). Ph.D Thesis,Seoul National University, Republic of Korea. 
    5. Journee, J.M., 1992. Experiments andcalculations on 4 Wigley hull forms. Technicalreport 0909, Ship Hydrodynamics Lab. Delft Univ.of Technology, The Netherlands. 
    6. King, B., Beck, R.F. and Magee, A. 1988.Seakeeping calculations with forward speedusing time-domain analysis. Proceedings, 17thSymposium on Naval Hydrodynamics, TheHague, The Netherlands, pp. 577-596. 
    7. Liapis, S. and Beck, R.F. 1985. Seakeepingcomputations using time-domain analysis.Proceedings, 4th International Conference onNumerical Ship Hydrodynamics. pp. 34-56. 
    8. Lin, W.M. and Yue, D.K.P., 1990. Numericalsolutions for large-amplitude ship motions in thetime domain. Proceedings 18th Symp. on NavalHydrodynamics, pp. 41-66. 
    9. Lin, W.M., Zhang, S., Weems, K. and Yue,D.K.P., 1999. A mixed source formulation fornonlinear ship-motion and wave-load simulations.Proceedings 7th Int. Conf. on Num. ShipHydrodynamics, Nantes, France. 
    10. Hong, S.Y. and Choi, H.S., 1995, “Analysis ofSteady and Unsteady Flow around a Ship usinga Higher-Order Boundary Element Method (inKorean),” Journal of the Society of NavalArchitects of Korea, Vol. 32, No. 1, pp. 42-57.     
    11. Hong, D.C., Jang, L.D., Kim, J.H. and Song,J.Y., 1998, “Computation of 3-D Vertical ShearForce and Bending Moment on a Ship Floating inRegular Waves bodies (in Korean),” Proceedings,Annual Spring Meeting of the Society of NavalArchitecture of Korea, pp. 276-279. 
    12. Hong, D.C. and Hong, S.Y., 2005, “WaveloadAnalysis for Heeled Barges with FloodedCompartiments (in Korean),” Journal of theSociety of Naval Architects of Korea, Vol. 42, No.4, pp. 379-387.     
    13. Hong, D.C. and Hong, S.Y., 2008. “Numericalstudy of the radiation potential of a ship usingthe 3D time-domain forward-speed freesurfaceGreen function and a second-orderBEM,”Journal of the Society of Naval Architectsof Korea Vol. 45, No. 3, pp.258-268.     
    14. Hong, D.C., Sung, H.G. and Hong, S.Y., 2009,“Numerical Tests of Large Amplitude Ship Motionwith Forward Speed in Severe Seas,” OMAE2009-79277, Proceedings ASME 28th InternationalConference on OMAE, Honolulu, Hawaii,USA. 
    15. Newman, J.N., 1992. Approximation of freesurfaceGreen functions. Wave Asymptotics,Proceedings Fritz Ursell Meeting, CambridgeUniv. Press, pp. 107-135. 
    16. Stoker, J.J., 1957. Water waves. IntersciencePublishers,New York, pp. 187-196. 
  • 이 논문을 인용한 문헌 (1)

    1. Cha, Ju-Hwan ; Ku, Namkug ; Park, Kwang-Phil 2016. "Computation of Nonlinear Hydrostatic Force and Position of a Floating Structure Considering the Coupled Large Inclined Angles" 한국CAD/CAM학회논문집 = Transactions of the Society of CAD/CAM Engineers, 21(1): 90~98     

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