摘要
在时域内对二维自由面条件和远方辐射条件进行数值模拟,自由面条件采用先积分后离散的处理方式,远方条件采用匹配积分方程的方法和透射理论的人工边界方法处理。分别计算了圆柱与水面直交和斜交时的水动力系数以及摇板造波问题的速度势,计算结果与文献值和理论值符合程度良好。
A new numerical simulation method of the free surface condition is used in this paper. We transform the linear free surface condition from the differential form into the integral form by twice integrating the equation with respect to time. The discrete format of the expression is employed by using discrete segments on free surface. Two simulation methods of radiation condition are used in this paper. One is the matching method and the other is the MTF (multi-transmitting formula) method. Comparisons are made between the present methods and published results for wall and non-wall sided circular cylinders in heave and sway. Theoretical and numerical results for two-dimensional waves generated by a rocker flap wavemaker are also given. In all cases the comparisons are excellent.
出处
《海洋工程》
CSCD
北大核心
2004年第2期17-25,共9页
The Ocean Engineering
关键词
匹配法
多次透射公式
人工边界
自由面条件
matching method
multi-transmitting formula
artificial boundary condition
free surface condition
