Abstract A developed momentum transfer coefficient based on Wen’s 1966 model was proposed, in which the two threshold values were used to keep the continuous particle porosity function. A second-order moment gas–particle two-fluid turbulent model that coupled this coefficient, was established to model and simulate the particle horizontal channel flows. An improved Reynolds stresses transport to close fluctuation velocities correlation between gas and particle phases was set to reveal the fully anisotropic characteristics of particle dispersions. The hydrodynamics of horizontal gas–particle turbulent flow was numerically simulated and validated by experimental measurement with satisfied agreements. Distributions of particle Reynolds stresses are significantly affected by two-phase interactions, turbulent diffusions and particle collisions. Much wider size and flatter profiles distributions were obtained in terms of the horizontal and vertical root-means-square of particle velocities in comparison with Wen’s 1966 model.

中文翻译：

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粒子水平通道流中动量传递系数的发展

摘要 在文1966模型的基础上，提出了一种发展的动量传递系数，其中两个阈值用于保持连续的颗粒孔隙度函数。建立了耦合该系数的二阶矩气-颗粒双流体湍流模型来模拟和模拟颗粒水平通道流动。改进的雷诺应力传递到气相和颗粒相之间的密切波动速度相关性被设置为揭示颗粒分散体的完全各向异性特征。水平气体-颗粒湍流的流体动力学通过实验测量进行了数值模拟和验证，并取得了令人满意的结果。颗粒雷诺应力的分布受两相相互作用、湍流扩散和颗粒碰撞的显着影响。