高速排水型船舶尾浪影响因素的数值研究

Numerical investigation on the effects of some factors on wash effects of high speed displacement ships

该文采用基于NURBS的高阶面元法与波谱函数法相结合的方法对高速排水型船舶的尾浪进行了数值计算,通过采用高阶面元法获取船舶近域波高,并对计算所得的有限波高数据进行波形分析获取波幅谱函数,从而求取较大范围的船舶尾浪。文中以最大波高作为判据,分析了船舶主尺度变化对船舶兴波及尾浪的影响,同时采用多判据的方法探讨了船型对船舶兴波和尾浪的影响。该文可为尾浪对环境影响的评估以及低尾浪船型的设计和优化提供相关参考。

A method coupling NURBS based higher order panel method with a spectrum method is used to calculate the washes of high speed displacement ships. The near field waves obtained by the NURBS method are used as the input for the spectrum method to get the wave spectrum function and then the wave＇s heights in the far field. The effects of ship main dimensions on its wave making and washes are discussed by using the maximum wave height criterion; effects of the hull form on the washes are discussed by using multi-criteria. The results provide a reference for the assessment of the effects of washes on the environment and for the design and optimization of ship hull with lower wash.