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首页> 外文期刊>Journal of Ship Research >On the Application of Open FOAM® in Gravity Water Wave Generation and Wave-Structure Interaction
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On the Application of Open FOAM® in Gravity Water Wave Generation and Wave-Structure Interaction

机译：OpenFOAM®在重力水波产生与波结构相互作用中的应用

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摘要

This article presents an investigation on the best practice for modeling of water wave generation and wave-structure interaction using a widely spread two-phase flow solver with a specific interface compression technique in OpenFOAM (R) (OpenFOAM Foundation Ltd., London, United Kingdom). A series of numerical experiments were conducted to examine the effects of the employed schemes, mesh resolution, time step resolution, and compression coefficient. Both surface elevation and velocity profile were considered as the criteria for assessment of the quality of the generated waves. The numerical experiments showed that by using a blending scheme between the Crank-Nicolson and Euler scheme, relatively high quality waves were produced, where the spurious current at the interface region was effectively reduced. Meanwhile, it was also recommended to apply a compression coefficient C-alpha = 1, the Courant number limit Co = .1, and a mesh resolution of 18 cells per wave height. This set of parameters was used to validate the numerical model for two sets of cases for wave forces on half-immersed horizontal cylinders. The results in general agreed well with the experimental data, although the inline forces were slightly but consistently overestimated.
机译：本文介绍了在OpenFOAM（R）（OpenFOAM Foundation Ltd.，英国伦敦）中使用广泛传播的两相流求解器和特定的界面压缩技术对水波产生和波结构相互作用建模的最佳实践的研究。 ）。进行了一系列数值实验，以检验所采用方案，网格分辨率，时步分辨率和压缩系数的影响。表面高度和速度剖面均被视为评估所产生波的质量的标准。数值实验表明，通过在Crank-Nicolson和Euler方案之间使用混合方案，可以产生相对较高质量的波，从而有效降低了界面区域的杂散电流。同时，还建议应用压缩系数C-alpha = 1，Couant数限制Co = .1，并且每个波高的网格分辨率为18个像元。这组参数用于验证半浸没水平圆柱体上波浪力的两组情况的数值模型。尽管轴向力略有升高，但始终高估了结果，但总体而言，该结果与实验数据基本吻合。

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