潜体波浪中近水面不同潜深和航向时运动和波浪力计算

Computation of Motion and Wave Forces for a SubmarineRunning near Free Surface in Different Depth of Immersion and Direction

本文对潜水细长体波浪中近水面运动和波浪力的计算 ,采用STF理论和Frank源分布紧密拟合方法预报波频运动和波浪力响应 ;采用Newman细长体方法和3-D修正处理计算垂直面低速潜体的二阶平均波浪力与力矩。该方法和计算程序的实用性和可靠性已经被多次模型试验结果比较、验证所证实。本文以某一国外典型潜艇为例 ,计算了七种潜深、七种相对浪向下艇体的近水面波频运动响应与波浪力响应 ,给出了几种运动与波浪力参数随潜深变化与浪向变化的计算实例。

A numerical method based on the STF method is developed to calculate the motion and wave-force responses of a near free-surface body in the regular and irregular waves. The mean drift wave forces are obtained in terms of the Newman slender-body theory with the three-dimensional modifications. The motions and wave-forces of a typical submerged body in the frequency domain and their transient responses in the time domain are given in several submerged depths and wave directions. The good agreement of the numerical results with the experimental results shows that the numerical method of this paper is valid and can be used to predict the seakeeping performance of the submerged body in the waves.