Numerical Study on the Breaking Bow Wave of High-speed KCS Model based on Smoothed Particle Hydrodynamics Method  

基于光滑粒子流体动力学方法的高速KCS船艏破波数值模拟研究

作　　者：Yang Xu Pengnan Sun Xiangshan Guan Yuxiang Peng Niannian Liu Xiang Zhang 徐杨;孙鹏楠;管祥善;彭玉祥;刘念念;张翔

机构地区：[1]School of Ocean Engineering and Technology,Sun Yat-sen University&Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519000,China [2]Guangdong Engineering Technology Research Center of Deep Ocean Equipment and Information,519000,Zhuhai,China

出　　处：《哈尔滨工程大学学报(英文版)》2024年第4期723-733,共11页Journal of Marine Science and Application

基　　金：The Guangdong Basic and Applied Basic Research Foundation(2024B1515020107);the National Natural Science Foundation of China(Grant Nos.52171329);the State Key Laboratory of Disaster Prevention&Mitigation of Explosion&Impact(Grant No.NOLGD-SKL-202201);the Fundamental Research Funds for the Central Universities,Sun Yat-sen University(Grant No.231gbi023).

摘　　要：Wave breaking at the bow of a high-speed ship is of great importance to the hydrodynamic performance of high-speed ships,accompanied by complex flow field deformation.In this study,the smoothed particle hydrodynamics(SPH)method under the Lagrange framework is adopted to simulate the breaking bow wave of the KCS ship model.In order to improve the computational efficiency,the inflow and outflow boundary model is used to establish a numerical tank of current,and a numerical treatment for free surface separation is implemented.Numerical simulations are carried out at Fr=0.35,0.40,0.5,0.6,and different types of wave breaking such as spilling breaker,plunging breaker,and scars are captured by the SPH method,which is consistent with the experimental result,demonstrating that the present SPH method can be robust and reliable in accurately predicting the breaking bow wave phenomenon of high-speed ships.Furthermore,the wave elevation and velocity field in the bow wave region are analyzed,and the evolution of the bow wave breaking is provided.

关 键 词：High-speed ships Breaking bow waves Smoothed particle hydrodynamics Numerical tank 

分 类 号：O35[理学—流体力学]