非结构化网格下近岸波生流数值模拟
Numerical simulation of near-shore wave-induced currents on unstructured grid
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摘要: 波浪破碎产生的近岸流是近岸海域关键的水动力因素之一。基于近岸波浪的椭圆型缓坡方程和二维近岸波生流方程,建立了非结构化网格下近岸波浪破碎形成的近岸流数值模型。数值模型中,在空间上采用有限体积法进行数值离散,在时间上采用欧拉向前格式数值离散。数值计算结果表明,该数值模型可以有效地模拟近岸波浪破碎产生的近岸流。Abstract: The breaking wave induced near-shore current is crucial hydrodynamics in near-shore zone.Based on the elliptic mild-slope equation for surface water waves and the 2D wave-induced current equation, the numerical model for near-shore breaking-wave-induced current was developed on unstructured grid.In the model, the spatial dispersion was made by finite volume method, and the time dispersion was made by Euler forward schemes.It was shown by numerical results that the model was effective in modeling near-shore wave-induced currents.
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Key words:
- wave /
- wave-induced current /
- unstructured grid /
- finite volume method
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