一种快速非线性海浪数值仿真方法

王 岚; 周霖仪; 聂卫东

doi:10.11993/j.issn.1673-1948.2015.04.013

一种快速非线性海浪数值仿真方法

doi: 10.11993/j.issn.1673-1948.2015.04.013

1.
中国船舶重工集团公司第705研究所, 陕西西安, 710075
2.
中国舰船研究院, 北京, 100192

详细信息

作者简介:
王岚(1971-), 女, 高级工程师, 研究方向为鱼雷总体设计技术、控制技术等.

中图分类号: P731.22; E993.1
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出版历程
- 收稿日期: 2015-04-01
- 修回日期: 2015-06-04
- 刊出日期: 2015-08-20

A Fast Simulation Method for Nonlinear Ocean Wave

1.
The 705 Research Institute, China Shipbuilding Industry Corporation, Xi′an 710075, China
2.
China Ship Research and Development Academy, Beijing 100192, China

摘要

摘要: 在海面微波散射等海洋军事研究领域, 关于非线性海浪的数值仿真问题日益受到重视。在借鉴已有研究成果的基础上, 提出了一种快速的非线性海浪数值仿真方法, 其基本思想是依据非线性海浪的统计特性对线性仿真数据进行非线性修正, 从而得到所需结果。通过采用基于JONSWAP谱的线性滤波并依据B分布特性进行非线性修正的方法对深水无破碎二维非线性海浪进行数值仿真。分析表明, 该方法能够快速而有效地模拟非线性海浪, 所得仿真数据不仅体现了非线性海浪波面位移的偏态分布特性, 而且在波动能量分布上, 仿真结果与JONSWAP谱所代表的海浪记录接近。
- 非线性海浪 /
- JONSWAP谱 /
- B分布 /
- 非线性修正
Abstract: Great emphases have been put on simulation of nonlinear ocean wave in some navy projects. This paper presents a fast method for simulating nonlinear ocean wave in deep sea. The basic idea of this method is to nonlinearly correct the linear simulation data according to the statistic characteristics of nonlinear ocean wave. First, a white noise is filtered by JONSWAP filter to obtain linear result. Then, the linear result is corrected to nonlinear one based on B-distribution characteristics to simulate the blue water two-dimensional unbroken wave. The wave data computed by this method shows the non-normality of real ocean wave. The power spectrum estimated from the nonlinear result is fairly close to JOSWAP spectrum, which indicates that the simulated wave energy distribution accords with the real wave data.
- nonlinear ocean waves /
- JONSWP spectrum /
- B-distribution /
- nonlinear correction

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参考文献(14)

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