Lagrangian simulations of ship-wave interactions in rough seas

Abstract A three-dimensional ship motion model was developed using the moving particle semi-implicit (MPS) method to calculate a ship motion under high wave height conditions where shipping water occurs. The ship’s hull was assumed to be a rigid body, and the interaction between the rigid body and fluid was simulated on the basis of weak coupling. A numerical wave tank was also developed to calculate a ship motion with minimum calculation costs. The numerical wave tank was able to create a series of waves and express the ship’s relative forward speed. Using the developed ship motion model and the numerical wave tank, towing tests were numerically performed for five typical wave conditions. The calculated ship motions were compared with the experimental results. As a result, the nonlinear effect of shipping water was successfully simulated by the MPS method, although there quantitative differences between the calculated and experimental results still remained. This study shows the potential of the MPS method as a new simulation tool for calculating a ship motion in high wave height conditions.

[1]  Seiichi Koshizuka,et al.  Improvement of stability in moving particle semi‐implicit method , 2011 .

[2]  Masaru Tsujimoto,et al.  Experimental and numerical study of shipping water impact on running ship foredeck in regular head seas , 2004 .

[3]  Odd M. Faltinsen,et al.  Impact flows and loads on ship-deck structures , 2004 .

[4]  Seiichi Koshizuka,et al.  Current Achievements and Future Perspectives on Particle Simulation Technologies for Fluid Dynamics and Heat Transfer , 2011 .

[5]  S. Koshizuka.  A particle method for incompressible viscous flow with fluid fragmentation , 1995 .

[6]  C. W. Hirt,et al.  Volume of fluid (VOF) method for the dynamics of free boundaries , 1981 .

[7]  Takeshi Miyamoto,et al.  A Study of Shipping Water Pressure on Deck by Two-Dimensional Ship Model Tests , 1976 .

[8]  Sumitoshi Mizoguchi,et al.  ANALYSIS OF SHIPPING WATER WITH THE EXPERIMENTS AND THE NUMERICAL CALCULATIONS , 1988 .

[9]  Masayuki Tanaka,et al.  Stabilization and smoothing of pressure in MPS method by Quasi-Compressibility , 2010, J. Comput. Phys..

[10]  Seiichi Koshizuka,et al.  Numerical analysis of shipping water impact on a deck using a particle method , 2007 .

[11]  Masashi Kashiwagi,et al.  Numerical simulation of strongly nonlinear wave-ship interaction by CIP-based cartesian grid method , 2010 .

[12]  Shigesuke Ishida,et al.  Experimental Study on Shipping Water Volume and its Load on Deck , 1997 .

[13]  Akihiro Kanai,et al.  Finite-difference simulation of green water impact on fixed and moving bodies , 2005 .

[14]  Hitoshi Gotoh,et al.  Enhancement of stability and accuracy of the moving particle semi-implicit method , 2011, J. Comput. Phys..

[15]  T. Yabe,et al.  The constrained interpolation profile method for multiphase analysis , 2001 .

[16]  S. Koshizuka,et al.  Moving-Particle Semi-Implicit Method for Fragmentation of Incompressible Fluid , 1996 .

[17]  Masashi Kashiwagi,et al.  A CIP-based method for numerical simulations of violent free-surface flows , 2004 .

[18]  Robert A. Dalrymple,et al.  Green water overtopping analyzed with a SPH model , 2005 .

[19]  Ken Shoemake,et al.  Animating rotation with quaternion curves , 1985, SIGGRAPH.

[20]  Kristian Nielsen,et al.  Numerical Prediction of Green Water Incidents , 2004 .

[21]  Moo-Hyun Kim,et al.  Step-by-step improvement of MPS method in simulating violent free-surface motions and impact-loads , 2011 .

[22]  Masashi Kashiwagi,et al.  Numerical simulation of wave-induced nonlinear motions of a two-dimensional floating body by the moving particle semi-implicit method , 2008 .

[23]  Katsuji Tanizawa,et al.  Three-dimensional numerical analysis of shipping water onto a moving ship using a particle method , 2009 .