| 二维矩形突起物绕流流动特性的实验分析 |
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| 引用本文： | 邱兰,齐鄂荣.二维矩形突起物绕流流动特性的实验分析[J].武汉大学学报(工学版),2007,40(6):36-41. |
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| 作者姓名： | 邱兰 齐鄂荣 |
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| 作者单位： | 1. 湖北水利水电职业技术学院,湖北,武汉,430070
2. 武汉大学水利水电学院,湖北,武汉,430072 |
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| 摘 要： | 利用PIV技术,对在均匀来流条件下无压流流道内底壁矩形突起物流动的二维瞬时流速场进行了测量,得到了湍流情况下,两种台阶比(h1/h=2、4),相同流量(Q=40 L/s)情况下突起物绕流流动特性及流场中旋涡生成发展与演化的一般规律.同时还对两种工况下流场结构的时均特点和突起物附近水面线的变化情况进行了分析.
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| 关 键 词： | PIV 突起物流动 流动特性比较 水面线 |
| 文章编号： | 1671-8844(2007)06-0036-06 |
| 修稿时间： | 2007年3月8日 |
Experimental analysis of characteristics of flow over 2D rectangular obstacle |
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| QIU Lan,QI Erong.Experimental analysis of characteristics of flow over 2D rectangular obstacle[J].Engineering Journal of Wuhan University,2007,40(6):36-41. |
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| Authors: | QIU Lan QI Erong |
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| Abstract: | For the condition that the flow in upstream of 2D rectangular obstacle is uniform,particle image velocimetry(PIV) is used to measure and visualize the transient velocity field of 2D flow over a rectangular obstacle in open ditch.The characteristics of flow field and the laws of the coherent vortex and its course of generation,development and evolvement in different step ratios(h/h1=2,4) and same flux(Q=40 L/s) under turbulent flow are unveiled.At the same time,the structural characteristics in the meantime and the change of water surface in upstream and downstream of obstacle under two instances are analyzed. |
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| Keywords: | PIV |
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