【摘要】 基于组分质量守恒理论,将浑水异重流的运动过程看成是含沙浑水中的泥沙这一组分在水体中的传输过程,建立组分方程,与考虑了平均流动中的旋流流动情况的RNGk-ε方程组进行耦合求解,利用目前广泛使用的商用FLUENT软件进行数学模型计算,并采用室内模型试验进行论证。结果表明:该数学模型可以有效模拟浑水异重流的潜入和前锋运动过程,为深入研究水库、湖泊及河流入海口浑水异重流问题提供了新的途径。借助此模型模拟了水库内汛期浑水异重流运动情况。更多还原

【Abstract】 Based on the theory of components mass conservation,the movement of the turbidity currents was approximated as a transfer process of sediment,which was one component of the muddy sediment in the water.The species equation was established and solved coupling with the RNG k-ε equations,which considered the vortex flow in the average flow,by using the commercial FLUENT software.Model experiment was used to demonstrate the numerical results.The results showed that the model could effectively simulate the plunging and forward movement of the turbidity currents and provided a new method for the turbidity currents research relative to reservoir,lake and river entrance.Finally this model was applied to simulate the movement of the turbidity currents for one reservoir when flooding.更多还原