深浅水中高速三体船兴波阻力数值计算

Numerical calculation of wave-making resistance of a high-speed trimaran in deep or shallow water

采用三维Rankine奇点一阶面元法,考虑非线性自由表面边界条件,计算了深水和浅水条件下的Wig-ley三体船定长直航运动兴波水动力.通过改变航速和片体之间的纵向及横向间距,分析了兴波阻力随航速和片体间距的变化规律,得到了片体间最佳相对位置.将计算结果与Wigley三体船的试验结果进行了比较,结果令人满意.

Considering nonlinear free surface boundary conditions, the wave-making resistance of Wigley trimaran of steady straight motion in deep or shallow water with constant depth was calculated by a panel method using three-dimensional （3D） Rankine singularity. The velocity and interval of outriggers dependence of the wave-making resistance were analyzed when the velocity and the tranverse and longitudinal interval of outriggers changed, and the optimal relative position of outriggers was obtained. Compared with the test data of a Wigley trimaran model, the numerical results of wave-making resistance of Wigley trimaran was satisfactory.