基于全模拟的水泵装置模型虹吸出水流道水力特性分析

发布时间：2018-06-17 03:26

本文选题：泵装置模型 + 虹吸流道　；参考：《南水北调与水利科技》2016年06期

【摘要】：虹吸式出水流道是大型泵站出水流道的主要形式之一,由于实际工程地形条件的限制,南水北调东线水源工程江都一站所采用的虹吸出水流道在工程设计中并不常见。针对江都一站泵装置模型虹吸出水流道,通过CFX软件对该泵装置全流道进行数值模拟,研究虹吸出水流道内部水流的运动特性、预测水力性能。计算结果表明管路水头损失主要来自于弯管段的水头损失,从出水流道进口至出水流道出口涡量呈现下降趋势,但是在出水流道出口,由于截面面积过大导致出口截面速度分布不均且引起了涡量的增加。对该泵装置进行外特性预测得到的结果与试验数据的整体趋势基本一致,表明计算结果真实可信。
[Abstract]:Siphon outlet passage is one of the main forms of outlet passage in large pumping station. Because of the limitation of actual engineering terrain condition, the siphon outlet passage used in Jiangdu station of East Route Water diversion Project of South-to-North Water transfer Project is not common in engineering design. Aiming at the model siphon outlet channel of the pump device in Jiangdu station, the numerical simulation of the whole channel of the pump device was carried out by CFX software to study the movement characteristics of the internal flow in the siphon outlet channel and to predict the hydraulic performance. The calculated results show that the head loss of the pipeline mainly comes from the head loss of the elbow section, and the vorticity from the outlet inlet to the outlet presents a downward trend, but at the outlet of the outlet, Because the cross section area is too large, the velocity distribution of exit section is uneven and the vorticity is increased. The results obtained from the prediction of the external characteristics of the pump unit are basically consistent with the overall trend of the experimental data, which indicates that the calculated results are true and reliable.
【作者单位】：扬州大学水利与能源动力工程学院;
【基金】：“十二五”国家科技支撑计划重点项目(22015BAD20B01) 江苏高校优势学科建设工程资助项目~~
【分类号】：TV675

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