基于HUST-Ship的方波数值造波方法研究
Numerical Studies of Square Wave Generation Using HUST-Ship
DOI: 10.12677/AMS.2020.74016, PDF,   
作者: 操 戈：海军装备部驻武汉地区军事代表局，湖北 武汉；吴元昊, 张志国, 冯大奎：华中科技大学，湖北 武汉
关键词: 方波；数值方法；误差分析；规则波； Square Wave； Numerical Method； Error Analysis； Regular Wave
摘要: 当不同的天气模式导致海洋在不同的方向产生两个海流系统时，就会产生一个交叉波，最终导致海面上的方波生成。方波的出现将威胁船舶的航行性能，严重时可能导致船舶倾覆。本文利用自研CFD软件HUST-Ship开展了基于规则波叠加方法进行方波数值波浪水池的研究。在进行数值模拟时，对不可压缩流体的RANS方程进行求解，数值造波采用在入口边界施加相应规则波的数学方程模拟方波，自由液面采用level-set方法获取。数值模拟结果表明两个有90度交叉角、相同波长和相位的规则波叠加在一起能够形成方波。选择水池中的四个点作为标记点，追踪标记点处液面高度变化，仿真结果与解析解得到的结果吻合。
Abstract: When two waves in different directions meet due to different weather patterns, a cross wave pattern will be generated, which will finally result in the spread of square waves on the sea surface. The emergence of square waves will threaten the navigation performance of the ship and may lead to ship capsized in severe case. In this paper, the numerical square wave flume is developed by using the in-house CFD software HUST-Ship. In the process of data simulation, by means of solving the RANS equation of incompressible fluid, the analytical solution of the corresponding regular wave is imposed at the inlet boundary, and the free surface is captured by level-set method. Two regular waves with a cross angle of 90 degrees and the same wavelength and phase are superimposed. The probe is used to deal with the simulation results and trace the selected points to obtain the relative errors between the simulation results and the analytical solutions. Moreover, error analysis is used to ensure the accuracy of the numerical tank.
文章引用：操戈, 吴元昊, 张志国, 冯大奎. 基于HUST-Ship的方波数值造波方法研究[J]. 海洋科学前沿, 2020, 7(4): 115-124. https://doi.org/10.12677/AMS.2020.74016

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