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PIV技术在涡轮叶栅内流场试验中的应用
引用本文:戴静君,姜义忠,董守平.PIV技术在涡轮叶栅内流场试验中的应用[J].实验流体力学,2003,17(4):68-70.
作者姓名:戴静君  姜义忠  董守平
作者单位:1. 北京石油化工学院,北京,102617
2. 石油大学,华东,257061
3. 石油大学,北京,102200
摘    要:对三种高环流系数叶片叶型和五种相对节距的涡轮叶栅进行内流场试验研究,在研究中采用粒子成像测试技术(PIV),获得叶栅内S1m流面的全流场流动信息,并采用拓扑图论原理经计算机进行图像处理,获得S1m流面的速度矢量场和旋度场。对所获得的叶栅内流场分析表明,随着涡轮环流系数的增加,液体流经叶栅的能量损失增大;随着叶栅相对节距的增大,叶栅内脱流区增大、漩涡区的旋度值随之增大。该研究结果将给涡轮叶型的设计提供有价值的参考。

关 键 词:PIV  涡轮叶栅  速度场  旋度场
文章编号:1007-3124(2003)04-0068-04
修稿时间:2002年11月18

The application of particle image velocimetry to fluid experimentation in a turbine cascade
DAI Jing-Jun,JIANG Yi-Zhong,DONG Shou-ping.The application of particle image velocimetry to fluid experimentation in a turbine cascade[J].Experiments and Measur in Fluid Mechanics,2003,17(4):68-70.
Authors:DAI Jing-Jun  JIANG Yi-Zhong  DONG Shou-ping
Institution:DAI Jing-Jun~1,JIANG Yi-Zhong~2,DONG Shou-ping~3
Abstract:The blade patterns were investigated with high circulation flow coefficients and different relative pitches. The flow field in S_1 flow face of cascade was tested by using the particle image velocity (PIV) technology, velocity field and vortex field inside cascade were obtained. Analysis for velocity field and vortex field shows that the energy loses of the fluids passing the cascades will increase with increasing of circulation flow coefficient and the flow separations regions and whirl intensity will increase with increasing of the relative pitch of the cascades. The comparison of the test results of internal flow fields and external features are a good agreement.
Keywords:PIV  turbo-cascade  velocity field  vortex field
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