| 应用粒子图像速度场仪对泊肃叶流动及圆柱绕流的测量 |
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| 引用本文： | 张玮,王元,徐忠,金文.应用粒子图像速度场仪对泊肃叶流动及圆柱绕流的测量[J].西安交通大学学报,2002,36(3):246-251. |
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| 作者姓名： | 张玮 王元 徐忠 金文 |
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| 作者单位： | 1. 西安交通大学能源与动力工程学院,710049,西安
2. 西安航空技术高等专科学校 |
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| 基金项目： | 国家自然科学基金资助项目 (5 9876 02 8) |
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| 摘 要： | 为了考察粒子图像速度场仪（PIV）的测量精度及分辨复杂流动结构的能力，对泊肃叶流动和圆柱绕流两种典型流动进行了测量。将泊肃叶流动的速度廓线的测量值与分析解 进行了对比，发现在测试区域内90％的测量值与分析解吻合良好，具有较高的精度，而近壁面区域由于速度偏振，测量值低于分析解。在此基础上，利用PIV技术测量了Re为500时圆柱绕流流动的主流区、圆柱两侧的剪切层，以及圆柱后的回流区和旋涡区的分布，验证了该技术非常适合于研究复杂的流动结构。
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| 关 键 词： | 粒子图像速度场 泊肃叶流动 圆柱绕流 测量 |
| 文章编号： | 0253-987X(2002)03-0246-06 |
| 修稿时间： | 2001年7月26日 |
Application of Particle Image Velocimetry to Measurement of Poisoeullie Flow and Flow around a Circular Cylinder |
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| Zhang Wei ,Wang Yuan ,Xu Zhong ,Jin Wen.Application of Particle Image Velocimetry to Measurement of Poisoeullie Flow and Flow around a Circular Cylinder[J].Journal of Xi'an Jiaotong University,2002,36(3):246-251. |
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| Authors: | Zhang Wei Wang Yuan Xu Zhong Jin Wen |
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| Institution: | Zhang Wei 1,Wang Yuan 1,Xu Zhong 1,Jin Wen 2 |
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| Abstract: | In order to test the accuracy and resolution of complex vortex by particle image veloci- metry(PIV) ,velocity fields of poisoeulie flow and flow around a circular cylinder were measured. Comparison between the measured velocity profile and analytical solution of poisoeullie flow shows that good agreement was found within the 90% measured region, while the former was lower than the latter near the wall because of velocity polarization. Further measurement of flow around a circular cylinder at Re =500 provided the distribution area of main flow, shear layer flow, recirculated flow and vortex. The results validate that PIV is well suitable to investigate complex flow pattern. |
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| Keywords: | PIV poisoeullie flow measurement accuracy flow around a circular cylinder |
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