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流量与环量对低扬程泵装置流道水头损失的交叉影响

陆伟刚 董雷 王兆飞 陆林广

陆伟刚, 董雷, 王兆飞, 陆林广. 流量与环量对低扬程泵装置流道水头损失的交叉影响[J]. 应用数学和力学, 2012, 33(12): 1431-1441. doi: 10.3879/j.issn.1000-0887.2012.12.005
引用本文: 陆伟刚, 董雷, 王兆飞, 陆林广. 流量与环量对低扬程泵装置流道水头损失的交叉影响[J]. 应用数学和力学, 2012, 33(12): 1431-1441. doi: 10.3879/j.issn.1000-0887.2012.12.005
LU Wei-gang, DONG Lei, WANG Zhao-fei, LU Lin-guang. Cross influence of discharge and circulation on head loss of conduit of pump system with low head[J]. Applied Mathematics and Mechanics, 2012, 33(12): 1431-1441. doi: 10.3879/j.issn.1000-0887.2012.12.005
Citation: LU Wei-gang, DONG Lei, WANG Zhao-fei, LU Lin-guang. Cross influence of discharge and circulation on head loss of conduit of pump system with low head[J]. Applied Mathematics and Mechanics, 2012, 33(12): 1431-1441. doi: 10.3879/j.issn.1000-0887.2012.12.005

流量与环量对低扬程泵装置流道水头损失的交叉影响

doi: 10.3879/j.issn.1000-0887.2012.12.005
详细信息
    作者简介:

    陆伟刚(1964—),男,江苏苏州人,副教授,博士(联系人. E-mail:wglu@yzu.edu.cn).

  • 中图分类号: TV136+.2;TV675

Cross influence of discharge and circulation on head loss of conduit of pump system with low head

  • 摘要: 流道水头损失与流量及环量之间的关系,是低扬程泵装置水力设计理论中对提高其水力性能的研究具有较大影响的重要问题.低扬程泵装置水泵导叶出口水流所具有的速度环量使上述关系变得复杂起来,需全面认识.研究结果表明:在无环量的条件下,进、出水流道水头损失与流量平方成正比;在Reynolds数达到阻力平方区要求的条件下,在一定转速范围内,对于不同转速下运行时的相似工况,流道水头损失与流量平方成正比,表现为泵装置效率保持不变;低扬程泵装置中设计流量时的出水流道水头损失决定于导叶出口水流的速度环量,两者之间的关系为一开口向上的曲线,存在最优环量;在低扬程泵装置变工况运行的条件下,出水流道水头损失受流量和环量的交叉影响,在水泵正常运行工况范围内,流道水头损失与流量之间呈现出接近于线性的关系,其机理有待进一步深入研究.
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出版历程
  • 收稿日期:  2012-08-04
  • 修回日期:  2012-11-03
  • 刊出日期:  2012-12-15

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