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| Simulation of Ship Motions Coupled with Tank Sloshing in Time Domain |
| LI Yu-Long-1, ZHU Ren-Chuan-1, MIAO Guo-Ping-1, FAN Ju-1, FAN She-Ming-2 |
| (1State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2Marine Design and Research Institute of China, Shanghai 200011, China) |
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Abstract Tank sloshing in ship cargo is excited by ship motions, in the meantime the sloshing flow induces impact load on tank wall, then affects the ship motion. Time domain ship motion was solved by using strip method and an impulse response function method based on the potential flow theory. Viscous flow theory was employed to simulate the nonlinear tank sloshing. Then the ship motion coupled with tank sloshing was established that the interactions of wave, ship body and tank sloshing are completely taken into considerations. This method has quite high efficiency for it takes advantage of potential flow theory for outer flow field and viscous flow theory for inside tank sloshing respectively. The numerical simulation and experimental studies indicate that the numerical results of ship motion coupled with tank sloshing can clearly shows the coupling effect of tank sloshing on the ship global motion. The results of the ship motion RAO of both computational and experiment ones are in good agreement.
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Received: 04 March 2011
Published: 30 March 2012
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