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.
关键词
管式动态混合器/Fluent模拟/结构优化/最佳工况/混凝
Key words
tubular dynamic mixer/Fluent simulation/structure optimization/optimal working condition/coagulation
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