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首页> 外文期刊>Engineering Applications of Computational Fluid Mechanics >Numerical Investigation On Flow Generated by Invent Mixer In Full-Scale Wastewater Stirred Tank
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Numerical Investigation On Flow Generated by Invent Mixer In Full-Scale Wastewater Stirred Tank

机译：发明混合器在大型污水搅拌池中产生流动的数值研究。

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AbstractThis paper investigates behaviors of three dimensional, full-scale flows generated by the newly developed INVENT HyperClassic? mixers in a primary influent channel of a wastewater treatment plant in the New York City. The ANSYS FLUENT, in conjunction with the standard k-ε turbulence closure and a multiple reference frame model, is employed for the investigations. Numerical simulations reveal large-scale circulations on cross sections perpendicular to the channel direction as a main feature of the flows, and such circulations are expected to be a key mechanism to enhance their mixing and keep solid particles in suspension. Stronger turbulence mixing in terms of turbulence kinetic energy and dissipation rate and more intensive mixing in the sense of time average and evaluated by the Lyapunov exponent are observed in the presence of two mixers than those with a single mixer. Additionally, a larger inlet velocity of the channel results in an increase in turbulence kinetic energy and dissipation rate b...
机译：摘要本文研究了由新开发的INVENT HyperClassic？生成的三维全尺寸流的行为。搅拌机在纽约市废水处理厂的主要进水通道中。 ANSYS FLUENT与标准的k-ε湍流闭合和多参考框架模型一起用于研究。数值模拟显示垂直于通道方向的横截面上的大规模循环是流动的主要特征，这种循环被认为是增强混合并保持固体颗粒悬浮的关键机制。在存在两个混合器的情况下，与使用单个混合器的情况相比，在湍流动能和耗散率方面更强的湍流混合以及在时间平均意义上进行更强烈的混合并通过李雅普诺夫指数进行了评估。另外，通道的较大入口速度导致湍动能和耗散率的增加。

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