长江科学院院报 ›› 2015, Vol. 32 ›› Issue (4): 51-54.DOI: 10.3969/j.issn.1001-5485.2015.04.010

• 水力学 • 上一篇    下一篇

圆柱体绕流环隙流场轴向流速及水力损失试验研究

张琪琦1,孙西欢2,李永业1   

  1. 1.太原理工大学 水利科学与工程学院,太原 030024;
    2.山西水利职业技术学院,运城 044004
  • 收稿日期:2013-12-01 修回日期:2014-03-05 出版日期:2015-04-01 发布日期:2015-04-21
  • 作者简介:张琪琦(1988-),男,福建龙岩人,硕士研究生,主要研究方向为水力学及河流动力学,(电话)13926019011(电子信箱)zqqxk1988@sina.com。
  • 基金资助:
    国家自然科学基金项目 (51109115,51179116)

Experimental Research on Axial Flow Velocity and Hydraulic Energy Consumption in Annulus Flow Field around Cylinder

ZHANG Qi-qi1,SUN Xi-huan2, LI Yong-ye1   

  1. 1.School of Water Conservancy Sciences and Engineering, Taiyuan University of Technology,Taiyuan 030024, China;
    2.Shanxi Water Conservancy Technical College, Yuncheng 044004, China
  • Received:2013-12-01 Revised:2014-03-05 Online:2015-04-01 Published:2015-04-21

摘要: 为进一步完善圆柱体绕流环隙流场理论,采用理论分析和模型试验相结合的方法,对不同流量及环隙比条件下圆柱体绕流环隙流场进行了研究,得出其轴向速度及水力损失随测点距离管道中心距离的变化关系曲线,并给出环隙水流轴向速度及水力损失分布曲线以及随流量及环隙比变化的相关拟合公式。试验结果与拟合公式基本一致,相关系数大部分在0.95以上,说明拟合公式是可行的。试验结果为圆柱体绕流环隙流场理论研究及实际应用提供了支撑。

关键词: 圆柱体, 环隙流场, 轴向流速, 水力损失, 流量, 环隙比

Abstract: To further improve the theory of annulus flow field of the flow around cylinder, we combined theoretical analysis with model test to research the annulus flow field around cylinder in the presence of different flow rates and annulus ratios. The variations of axial velocity and hydraulic loss along with the distance of measurement point to the cylinder center are obtained, and the fitting formulas describing the variations of axial velocity and hydraulic loss with flow rate and annulus ratio are given. The test results are consistent with the fitting formulas, and most of the correlation coefficients are above 0.95, indicating that the fitting formulas are feasible. The result is a test support for the theoretical research and practical application of the annulus flow field around cylinder.

Key words: cylinder, annulus flow field, axial flow velocity, hydraulic energy consumption, flow rate, annulus ratio

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