个人信息Personal Information
研究员
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:水利工程系
电子邮箱:liusx@dlut.edu.cn
Nonlinear numerical simulation on extreme-wave kinematics
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论文类型:期刊论文
发表时间:2009-01-01
发表刊物:ACTA OCEANOLOGICA SINICA
收录刊物:SCIE、CSCD、Scopus
卷号:28
期号:3
页面范围:75-81
ISSN号:0253-505X
关键字:numerical wave tank; image Green function; higher-order boundary element method; fully nonlinear; extreme wave
摘要:A fully nonlinear numerical model based on a time-domain higher-order boundary element method (HOBEM) is founded to simulate the kinematics of extreme waves. In the model, the fully nonlinear free surface boundary conditions are satisfied and a semi-mixed Euler-Lagrange method is used to track free surface; a fourth-order Runga-Kutta technique is adopted to refresh the wave elevation and velocity potential on the free surface at each time step-, air image Green function is used ill the numerical wave tank so that the integrations oil the lateral surfaces and bottom are excluded. The extreme waves are generated by tire method of wave focusing. The physical experiments are carried out in a wave flume. On the horizontal velocity of the measured point, numerical solutions agree well with experimental results. The characteristics of the nonlinear extreme-wave kinematics and the velocity distribution are studied here.