“浑水水力分离清水装置”流场数值模拟——基于加压液化输沙技术的不同水头作用  

Research on the Pressurized Water Head Liquefied Sediment Transport Technology Application in the“Turbid Water Hydraulic Separation Device”

作　　者：惠康 谭义海[2] 

机构地区：[1]新疆维吾尔自治区水利水电勘测设计研究院,乌鲁木齐830000 [2]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《中国农村水利水电》2016年第1期100-104,共5页China Rural Water and Hydropower

基　　金：国家星火计划(2012GA890002);国家自然科学基金重点资助项目(50469003)

摘　　要：为完善加压液化输沙技术与浑水水力分离清水装置的结合 ,在前期研究成果的基础上 ,通过采用 RNG （重整化群）两方程紊流模型和简化的多相流Mixture（混合）模型 ,对不同加压液化渗水孔压力水头作用于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.根据FL U EN T软件计算结果 ,详细分析了不同加压水头作用下 ,装置内部流场泥沙分布特征的变化.研究表明 ,加压液化输沙技术在压力水头为1.8～1.9m作用下 ,清水溢流含沙浓度较小 ,排沙底孔排沙畅通 ,是装置运用加压液化输沙技术最理想的状态.研究结果为将加压液化输沙技术更好的运用于浑水水力分离清水装置提供了理论依据.In optimizing the combination of pressurized liquefied sediment transport technology and Turbid Water Hydraulic Separation device ,Based on the results of preliminary studies ,with RNG two-equation turbulent model and the simplified multiphase mixture model ,the numerical simulation has been taken to simulate how different pressurized apertures effect on the device internal two-phase 3D water-sediment flow field .According to the results of FLUENT software ,analyzed device internal water-sediment flow field with different water heads .Research shows that ,with a water head of 1 .8～1 .9 m in pressurized liquefied sediment transport technology ,the outlet water flow contains minimum sediment Concentration ,and the sediment apertures on the device bottom work well ,which is the i deal state of the device applying the technology .The results provide a theoretical basis for the pressurized lique-fied sediment transport technology applying on the device .

关 键 词：浑水水力分离清水装置 水沙分离 数值模拟 加压液化输沙技术 压力水头 

分 类 号：TV135.2[水利工程—水力学及河流动力学]