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将一个三维湍能封闭模型应用于渤海潮流模拟,通过流速分解的初边值方法,计算了渤海全海区潮波系统、潮流结构,结果与观测符合较好。计算同时给出了湍粘性系数和湍动能的时空分布,比较常湍粘性系数和湍的垂直抛物分布及湍能封闭模拟表明,湍粘性系数的不同选取会对流场结构有显著影响。
A three-dimensional turbulent model was applied to simulate the tidal current in the Bohai Sea. Based on the initial boundary value method of flow velocity decomposition, the tidal wave system and tidal current structure in the whole Bohai Sea area were calculated. The results are in good agreement with the observations. Computation gives both the temporal and spatial distribution of turbulent viscosity and turbulent kinetic energy. The vertical parabolic and turbulent closed-form simulations of both turbulent viscous coefficient and turbulent flow show that different selection of turbulent viscosity coefficients can significantly affect the flow field structure.