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Influence of Different Lateral Bending Angles on the Flow Pattern of Pumping Station Lateral Inflow

机译:不同横向弯曲角度对泵站横向流入流动模式的影响

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摘要

A model of the pumping station lateral inflow forebay was established to explore the influence of different lateral bending angles of the pumping station lateral inflow. The lateral bending angles were set at 45° and 60°, and the two schemes were calculated separately. Analyzing the results of the numerical simulation showed that the flow patterns of the diversion passages of different schemes were good, but the advancing mainstream of the 1# inlet passage near the sidewall was seriously deviated after entering the forebay. Most of the water can flow smoothly into the inlet passage, while a small part of the water flowed into the sidewall and formed a backflow, resulting in a large-scale backflow zone near the left sidewall of the forebay. Moreover, the flow in the backflow zone was turbulent, which affected the water inlet conditions of the 1# water flow passage. Comparing the water inlet conditions of the water passage with the numerical simulation results of 45° and 60° bending angles showed that the larger the lateral bending angle of the forebay was, the worse the flow pattern of the water flow, and the more unfavorable the pump operation.
机译:建立了泵站横向流入前板的模型,探讨了泵站横向流入的不同横向弯曲角度的影响。横向弯曲角度设定在45°和60°,并分别计算两种方案。分析数值模拟的结果表明,不同方案的引流通道的流动模式良好,但在进入前平后,侧壁附近的1#入口通道的前进主流。大多数水可以平稳地流入入口通道,而流入侧壁的一小部分水流并形成回流,从而导致前侧壁附近的大规模回流区。此外,回流区中的流动是湍流的,这影响了1#水流通道的进水条件。比较水通道的水入口条件与45°和60°弯曲角度的数值模拟结果表明,前挡板的横向弯曲角越大,水流动的流动模式越差,以及更不利的泵运行。

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