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为解决浑水水力分离清水装置因高度问题难以应用的问题,采用重整化群两方程紊流(RNGκ-ε)模型和简化的多相流混合模型,对应用加压液化输沙技术前后的浑水水力分离清水装置的水沙两相三维流场进行了数值模拟,并由FLUENT软件分析了运用加压液化输沙技术前后装置内部流场泥沙分布变化。结果表明,加压液化输沙技术在一定压力水头作用下,可避免装置锥体底部的泥沙淤积,说明该技术可解决装置由于降低锥体高度出现的底部泥沙淤积问题,为降低装置设计高度提供了理论依据。
In order to solve the problem that the turbid water hydraulic separation water device is difficult to be applied because of the height problem, the RNGκ-ε reorganization group model and the simplified multiphase flow mixing model are used to analyze the effects of pressurized liquefaction and sediment transport The three-dimensional flow field of water and sediment in the muddy water hydraulic separation water unit was numerically simulated. The change of sediment distribution in the internal flow field of the unit before and after the pressurized liquefaction sediment transport was analyzed by FLUENT software. The results show that pressurized liquefied sediment transport technology can avoid the sediment deposition at the bottom of the cone under a certain pressure head, which shows that this technique can solve the problem of sediment deposition at the bottom due to the decrease of cone height, Height provides a theoretical basis.