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A non-hydrostatic numerical model for calculating free-surface stratified flows

机译:用于计算自由表面分层流的非静水数值模型

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摘要

A three-dimensional non-hydrostatic numerical model for simulation of the free-surface stratified flows is presented. The model is a non-hydrostatic extension of free-surface primitive equation model with a general vertical coordinate and horizontal orthogonal curvilinear coordinates. The model equations are integrated with mode-splitting technique and decomposition of pressure and velocity fields on hydrostatic and non-hydrostatic components. The model was tested against laboratory experiments on the steep wave transformation over the longshore bar, solitary wave impact on the vertical wall, the collapse of the mixed region in the thin pycnocline, mixing in the lock-exchange flows and water exchange through the sea strait. The agreement is generally fair.
机译:提出了三维自由流体数值模拟的自由表面分层流模型。该模型是自由表面原始方程模型的非静力学扩展,具有常规的垂直坐标和水平的正交曲线坐标。模型方程式与模式分解技术集成在一起,并分解了静水和非静水部件上的压力和速度场。该模型已针对实验室实验进行了测试,包括在长岸酒吧上的陡波转变,孤波对垂直壁的撞击,稀薄的比索克林混合区域的坍塌,锁止水流中的混合以及通过海峡的水交换。该协议通常是公平的。

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