| MD-82飞机客舱环境流场的HWA测量与分析 |
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| 引用本文： | 王维,姜楠,曹晓东,沈忱,刘俊杰.MD-82飞机客舱环境流场的HWA测量与分析[J].天津大学学报(自然科学与工程技术版),2013(1):2-7. |
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| 作者姓名： | 王维 姜楠 曹晓东 沈忱 刘俊杰 |
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| 作者单位： | 天津大学机械工程学院;天津市现代工程力学重点实验室;天津大学环境科学与工程学院 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目(2012CB720100);国家自然科学基金资助项目(10832001,11272233);中国科学院力学研究所非线性国家重点实验室对外开放课题联合资助项目 |
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| 摘 要： | 使用热线测速技术以高于湍流最小时间尺度的分辨率,精细测量了MD-82飞机客舱环境中的条缝型送风口射流流场和个性化送风口射流流场.对流场的平均速度剖面、湍流度分布、湍能谱进行了分析.平均速度的变化揭示了离开出口后流场速度的衰减规律.湍流度表明了湍流流场脉动剧烈程度和湍流扩散发展规律,是各种尺度的脉动分量叠加的结果.对流场的湍能谱分析展现了惯性子区的存在,能量从大尺度的含能区通过惯性子区传递给小尺度结构并最终耗散为热能.
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| 关 键 词： | 湍射流 热线测速技术 湍能谱 机舱环境 |
HWA Measurement and Analysis of MD-82 Aircraft Cabin Environment Flow Field |
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| Wang Wei,Jiang Nan,Cao Xiaodong,Shen Chen,Liu Junjie.HWA Measurement and Analysis of MD-82 Aircraft Cabin Environment Flow Field[J].Journal of Tianjin University(Science and Technology),2013(1):2-7. |
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| Authors: | Wang Wei Jiang Nan Cao Xiaodong Shen Chen Liu Junjie |
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| Institution: | 1.School of Mechanical Engineering,Tianjin University,Tianjin 300072,China;2.Tianjin Key Laboratory of Modern Engineering Mechanics,Tianjin 300072,China;3.School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | The slit jet flow and personalized jet flow in the MD-82 aircraft cabin environment are finely measured by constant-temperature anemometry system with the resolution higher than the smallest time-scale of turbulence. Mean velocity profiles, turbulence intensity distributions and turbulence energy spectrum are analyzed. The variation of mean velocity reveals the decaying of the velocity beyond the outlet. Turbulence intensity evolutions indicate that the degrees of fluctuations are the result of the superimposition of many fluctuations with different scales. The turbulence energy spectrum shows that the inertial sub-range exists. The energy from the energy-containing large scale is cas- caded to the small scale through the inertial sub-range, which is finally dissipated into heat. |
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| Keywords: | turbulent jet flow hot-wire anemometry turbulence energy spectrum aircraft cabin environment |
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