水下航行体波浪力理论预报

Theory prediction of wave forces for a deep-submerged body

本文对水下航行体近水面航行状态进行波浪力的计算,计算采用STF理论和Frank源分布紧密拟合方法预报波浪力响应以及用Newman细长体方法和3D修正方法计算水下航行体的二阶平均波浪力与力矩。该方法和计算程序已经过多次模型试验结果比较和验证。采用该方法就某水下航行体计算了二种水深、七种相对浪向下近水面波浪力响应,并给出了波浪力参数随水深变化与浪向变化的计算结果。

The wave forces are important when a deep-submerged body runs near the water surface in regular and irregular waves. In this paper the computation method based on STF theory and Frank closed fit for the wave forces together with Newman slender body theory added 3D effect for the second-order mean wave forces is described, and the fact that the theoretical computation results are in a good agreement with the experiment results is also presented. Based on the computation method a serial calculation results of wave forces response are presented in several depths of immersion and wave directions.