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首页> 外文期刊>Journal of hydraulic research >Application of computational fluid dynamic modelling to improve flow and grit transport in Terrence J. O'Brien Water Reclamation Plant, Chicago, Illinois
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Application of computational fluid dynamic modelling to improve flow and grit transport in Terrence J. O'Brien Water Reclamation Plant, Chicago, Illinois

机译：伊利诺伊州芝加哥市Terrence J. O'Brien水回收厂的计算流体动力学建模在改善流量和砂砾输送中的应用

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摘要

The Terrence J. O'Brien Water Reclamation Plant (WRP) serves a population of around 1.3 million people and service area of 368.8km(2) in Chicago, IL. Metropolitan Water Reclamation District of Greater Chicago, the agency responsible for the maintenance and operation of the WRP, observed non-uniform distribution of grit deposition between the six grit tanks. Single- and multiphase flow simulations were used to investigate the non-uniform grit distribution and to evaluate potential solution alternatives to ensure the plant operates at an optimal capacity. The simulations revealed the formation of secondary currents due to a bend in the approach conduit; this explained the preferential sediment conveyance along the left side of the conduit and higher deposition at the southernmost grit tanks. Baffles at the centre of the approach conduit and a constriction wall along the left side were recommended for breaking the secondary currents and uniform distribution of the grits.
机译：Terrence J. O'Brien水回收厂（WRP）为伊利诺伊州芝加哥市的130万人口提供服务，服务区域达368.8 km（2）。负责WRP维护和运营的大芝加哥大都会水回收区观察到六个沉砂池之间的沉砂分布不均匀。单相和多相流模拟用于调查砂粒分布不均，并评估可能的解决方案，以确保工厂以最佳产能运行。模拟结果表明，由于引流管弯曲而形成了次级电流。这解释了沿管道左侧的优先沉积物输送和最南端的砂砾池中较高的沉积物。建议使用引流管中心的挡板和左侧的缩颈壁，以断开次级电流并均匀分配砂粒。

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