| 在轴流风扇中的流场测量和显示 |
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| 引用本文： | 葛宁. 在轴流风扇中的流场测量和显示[J]. 南京航空航天大学学报(英文版), 2000, 17(2) |
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| 作者姓名： | 葛宁 |
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| 作者单位： | 南京航空航天大学动力工程系南京,210016 |
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| 摘 要： | 介绍了利用激光多普勒测速仪(LDA)和激光片光流场显示技术在一轴流风扇转子叶尖附近流场测量得到的结果.试验结果表明,转子叶尖处的通道涡并不是叶尖间隙流卷起造成的,而是由于端壁附面层受到叶尖间隙流的横向冲击后从机匣壁面上脱落形成的.
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| 关 键 词： | 轴流风扇 激光多普勒测速仪 流场显示 涡 |
MEASUREMENT AND VISUALIZATION OF FLOW FIELD IN AXIAL FLOW FAN |
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| Ge Ning. MEASUREMENT AND VISUALIZATION OF FLOW FIELD IN AXIAL FLOW FAN[J]. Transactions of Nanjing University of Aeronautics & Astronautics, 2000, 17(2) |
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| Authors: | Ge Ning |
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| Abstract: | An experimental investigation associated with the basic fluid mechanics in an axial flow fan is described in this paper. The flow field in the tip region has been studied by laser Doppler anemometer (LDA) and flow visualization technique. Some experimental data and images are interpreted to understand the complex interactions between the annulus wall boundary layer and the leakage flow. It shows that the vortex inside the blade passage is produced by the separation of annulus wall boundary layer rather than the rolling up of leakage flow. |
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| Keywords: | axial fan laser Doppler anemometer flow visualization vortex |
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