一种适用于船舶时域运动快速计算的混合方法  

A hybrid approach applied to fast calculating the time-domain ship motions

作　　者：童晓旺 李辉[1] 任慧龙 

机构地区：[1]哈尔滨工程大学高性能舰船技术国防重点学科实验室,哈尔滨150001

出　　处：《船舶力学》2013年第7期756-762,共7页Journal of Ship Mechanics

基　　金：国家973基金资助项目(2011CB013703);国家自然科学基金资助项目(51079034)

摘　　要：在时域内建立Rankine源法和时域Green函数法互相匹配的数学模型,控制面上的解既满足内部自由面条件,又满足远方辐射条件。由匹配数学模型可知只有控制面涉及到时域Green函数且与主尺度满足比列关系,因此不需每次都制表插值,实现了时域内船舶运动快速计算。将文中方法应用于零航速船舶瞬时运动数值计算,结果表明该方法具有良好的精确性、稳定性、高效性和普适性。Matching Rankine source method and time-domain Green＇s function method in the time do- main, the solution of the control surface meets internal and free surface conditions, and also meets the dis- tant radiation condition. By matched mathematical model it is known that only control surface related to the time-domain Green＇ s function with the main scale, so it is easy to achieve the rapid calculation of the time domain ship motions without tab interpolation every time. Using the method to numerically calculate the ze- ro-speed instamaneous ship motion, the results show that the method in this paper is well accuracy, stabil- ity, efficiency and universality.

关 键 词：船舶时域运动 匹配数学模型 快速计算 

分 类 号：U661.13[交通运输工程—船舶及航道工程]