| 纵向涡强化换热的M-Z干涉流动显示技术 |
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| 引用本文： | 刘永,宋耀祖.纵向涡强化换热的M-Z干涉流动显示技术[J].工程热物理学报,2008,29(1). |
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| 作者姓名： | 刘永 宋耀祖 |
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| 作者单位： | 清华大学航天航空学院,北京,100084 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 本文采用M-Z干涉测量的方法,研究了半三角形翼片纵向涡发生器强化换热方案对矩形通道内气体流动换热的影响,获得了安装纵向涡发生器前后对流换热温度场的M-Z干涉图像.通过对实验获得的干涉图像进行分析处理,表明安装纵向涡发生器后,通道内入口段流动的热边界层明显变薄,反映了纵向涡对流动换热的强化作用,验证了将M-Z干涉测量方法应用于纵向涡强化换热研究的可行性.
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| 关 键 词： | 纵向涡 强化换热 M-Z干涉 热边界层 纵向涡发生器 强化换热 干涉图像 流动显示技术 INTERFERENCE HEAT TRANSFER ENHANCEMENT VORTICES LONGITUDINAL VISUALIZATION 应用 测量方法 验证 强化作用 涡对 变薄 热边界层 入口段 矩形通道 分析处理 实验 |
FLOW VISUALIZATION OF LONGITUDINAL VORTICES HEAT TRANSFER ENHANCEMENT BY USING M-Z INTERFERENCE |
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| LIU Yong,SONG Yao-Zu.FLOW VISUALIZATION OF LONGITUDINAL VORTICES HEAT TRANSFER ENHANCEMENT BY USING M-Z INTERFERENCE[J].Journal of Engineering Thermophysics,2008,29(1). |
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| Authors: | LIU Yong SONG Yao-Zu |
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| Abstract: | The heat transfer enhancement of gas flow in narrow-channel with a pair of embedded half-delta longitudinal vortices generators is studied by using the M-Z interference method, and the M-Z interference images focusing on the temperature field of heat convection are taken on the cases whether the vortices generators are embedded. The processing of the M-Z interference images suggests that the thermal boundary layer of the channel's thermal entrance becomes clear thinner, which reflects the heat transfer enhancement caused by longitudinal vortices. The effectiveness of M-Z interference method applied in longitudinal vortices study is also proved. |
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| Keywords: | longitudinal vortices heat transfer enhancement M-Z interference thermal boundary layer |
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