基于海浪谱的海浪模拟的改进  

Improvement of Wave Simulation Based on Ocean Wave Spectrums

作　　者：郑茂琦[1] 马春翔[1] 王志波[1] 高峰[1] 

机构地区：[1]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《系统仿真学报》2014年第2期369-375,共7页Journal of System Simulation

摘　　要：针对经典海浪模拟方法中波浪的波峰波谷变化过于突兀的问题,对海浪谱函数进行了研究,得出经典模拟方法未考虑海浪形成的时间历程对于浪形的影响是导致浪的波峰波谷变化过于突兀的主要原因;基于随机振动相关函数理论提出对经典海浪模拟改进的数学模型,改进的数学模型能够表征海浪形成的时间历程对于海浪的影响;通过数值模拟得到的三维海浪模拟图验证了改进模型的正确性,解决了目前海浪模拟波峰波谷变化过于突兀的问题。为后续海上工程中能够更精确地分析海浪对浮体的作用奠定了基础。The simulation using classical theory was studied and the problem was found that wave troughs and crests changed abruptly. By analyzing the wave spectrum function, it was concluded that the classic methods of wave simulation did not consider the influence of the time process of the waves on the shape of waves, thus resulting in the problem. And an improvement was set forth based on the theory of random vibration correlation function, to the mathematic model of classical wave simulation. Improved mathematic model could express the influence of time process of the waves on the simulation. And through the graphic simulation, the correctness of the improvement to the theory was proven. The foundation for the subsequent sea projects was laid in which more precise analysis of the impacts of the waves on floats was needed.

关 键 词：海浪模拟 海浪谱 相关函数 仿真效率 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]