点击次数：

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.