【摘要】 本文利用理想流体的欧拉方程和用有限元方法建立了波体干扰计算模型。在自由表面上应用了线性自由面边界条件,非定常的欧拉方程用分步法求解,并用时间步进积分法分别处理压力泊松方程,速度方程和自由面上的波浪运动。为了证明本文提出的计算方法,在自由面上摇荡的半球用于作为数值计算例,把计算结果与用不同的理论方法得到的结果进行了比较。更多还原

【Abstract】 Based on Euler’s equation in the ideal fluid,a wave-body interaction computation scheme is formulated by the finite element method (FEM). The linear free surface boundary condition is used.The unsteady Euler’s equation is solved by the fraction step method and the time step marching integration approach is employed to deal with the pressure Poisson equation,velocity equations and the wave motion on the free surface,independently.To verify the present method a floating hemisphere oscillating on the free surface is introduced for a numerical computation example.The computed results are compared with those by different theoretical methods.更多还原