首页|基于Fluent模拟的管式涡轮动态混合器结构及应用参数优化

基于Fluent模拟的管式涡轮动态混合器结构及应用参数优化

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管式涡轮动态混合作为市政给水处理领域新型混合方式,其研究与应用尚处于起步阶段,缺乏对工艺参数选择的明确指导.为此,研究基于管式动态混合器的工艺分析,运用Fluent软件模拟了不同转速、流量、涡轮扇叶偏转角、涡轮与管道直径比以及安装位置条件下的絮凝过程中管内水流流场.通过获取的速度矢量图和迹线图,能够更有效地优化管式动态混合器的结构参数,并探寻其实际应用的最佳工况.研究结果表明,转速和流量应进行合理配置,实际操作过程中100 r/mim的转速能在保证混合效果的同时实现能量节约.在偏转角方面,大角度扇叶偏转更优,过小的角度反而会增加水流阻力并导致动能损失.前端扇叶处的局部涡旋丰富性对于药剂与液体的充分搅拌至关重要.因此,在管道占比方面,70%的比例表现更佳,较小的比例在大、小流速及转速下均不利于前端涡旋的形成.上述研究为管式涡轮动态混合器在市政给水处理领域的应用提供了重要的理论依据和实践指导.
Structure and Applied Parameters Optimization of Tubular Dynamic Mixer Based on Fluent Simulation
As a novel hybrid approach in municipal water supply treatment field,the exploration and application of tubular turbine dynamic mixers remain in their infacy,with process parameters selection often relying on trial and error.Therefore,we conducted extensive research on the tubular dynamic mixer process and employed Fluent simulations to examine various parameters such as rotational speed,flow rate,turbine blade,diameter ratio of turbine and pipe and installation position.This allowed us to obtain velocity vector diagrams,energy diagrams and trace diagrams under diverse conditions,facilitating the optimization of tubular dynamic mixer structure parameters and identifying the most effective operating conditions for practical application.The results indicated that both rotational speed and flow rate should be reasonably configured,and the 100 r/min rotation speed could achieving an optimal mixing effect while conserving flow rate.Regarding the deflection angle,larger angles were generally preferred.However,excessively small angles can increase water flow resistance and result in kinetic energy loss.The presence of a rich local vortex at the front fan blade enhances thorough mixing with the added liquid.Consequently,in terms of pipeline proportion,70%ratio was more suitable,as smaller proportions did not support the formation of a frontal vortex across various flow rates and rotational speeds.The above research provides important theoretical basis and practical guidance for the application of tubular turbine dynamic mixers in minicipal nater treatment.

tubular dynamic mixerFluent simulationstructure optimizationoptimal working conditioncoagulation

张肸同、侯培强、张志、邓承良、张怀宇、谢社平、夏韵、徐斌、曾国键、张彬

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亚太建设科技信息研究院有限公司,北京 100120

同济大学环境科学与工程学院,上海 200092

武汉力祯环保科技有限公司,湖北武汉 430074

中国市政工程中南设计研究总院有限公司,湖北武汉 430010

湖南省邵东市自来水公司,湖南邵东 422800

四会市肇水水务有限公司,广东四会 526200

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管式动态混合器 Fluent模拟 结构优化 最佳工况 混凝

2024

净水技术
上海市净水技术学会,上海市城乡建设和交通委员会科学技术委员会办公室

净水技术

CSTPCD
影响因子:0.643
ISSN:1009-0177
年,卷(期):2024.43(12)