时域中的潜体兴波研究

从格林定理出发,在边界面上布置Rankine源和偶极子,在时域中用时间步进法计算模拟了潜体近自由面运动的兴波现象,构建了一种处理兴波问题的计算模型.文中详细介绍了这种方法的理论推导和计算过程,并通过试算确定了适当的模型参数.通过对多个参数的变化调整,讨论了它们对潜体兴波阻力和波形变化的影响.大量的数值试验和与试验数据的比较,证实了该法作为三维数值波浪水池的一个支撑模型是可行、可靠的.

Time Domain Research on the Wave Making of Moving Submerged Body

A valuable calculation model based on Green's theorem is constructed to tackle wave making problem in this paper.In the model,Rankine Sources and dipoles are placed on boundary surfaces and time-stepping scheme in time domain is used to simulate the wave making in water tank caused by submerged body.Theory reasoning and calculation process of this method is also introduced in detail,and proper parameters of the model are determined by means of many numerical tests.The influences of the adjustment of various parameters on wave making resistance of submerged body and wave pattern are discussed.The comparison between various numerical tests and real experiment data shows that this method is a feasible and reliable supporting model of 3-D numerical wave tank.