turbulent viscosity

The anelastic equations set without consideration of turbulent viscosity ( call it equations set ⅲ);

不计湍流粘性的滞弹性方程（称为方程组Ⅲ）；

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Baldwin-Lomax model is adopted to give turbulent viscosity μ _ t.

湍流模式采用Baldwin-Lomax模式.

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Based on the vortex blob theory suggested by ZHANG Hong-Wu, a formula of turbulent viscosity for hyper-concentrated flows is derived by using an high accuracy expression for vertical distribution of velocity.

基于张红武的紊流涡团模式和采用高精度的流速垂向分布表达式，建立起高含沙水流的紊动粘性系数计算公式。

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On the basis of 3 D nonlinear Navier Stokes equations under Sigma tranformations and with free surface, using turbulent closure model to resolve vertical turbulent viscosity coefficient, a numerical model of the Beibu Gulf's storm surges is presented.

模型以经Sigma坐标变换后具有自由表面的三维非线性Navier－Stokes方程为基本方程，采用紊流封闭模型求解垂直方向紊动粘滞系数，建立了一个北部湾的三维风暴潮模型。

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