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2D-PIV measurement of aircraft cabin air distribution with a high spatial resolution

机译：高空间分辨率的飞机机舱空气分配的2D-PIV测量

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摘要

Mixing air ventilation systems are currently used in commercial airplane environmental control systems (ECS), which are essential to create a safe, healthy and thermally comfortable cabin environment. To evaluate the performance of cabin air distributions, the first step is to quantify how the airflow gets distributed within cabins. In this investigation, a large-scale particle image velocimetry (PIV) measurement was performed to characterize the mixing air distributions inside a partially transparent aircraft cabin mockup. The PIV measurement was performed at a total of 5 large sub-regions each with size of 975 mm × 650 mm to obtain the global flow field within one cross section. Both the systematic errors and statistical errors of the PIV measurement were analyzed. The air distributions in the cabin mockup were measured under both isothermal condition and cooling condition. The results indicated that the cabin airflows were of low velocities and high turbulence levels. Then we studied the influence of the cold air jets and the thermal plumes on the global airflow pattern. The distributions of velocity, vorticity and turbulence intensity under the two conditions were also analyzed and compared in detail. The data obtained from this study will be useful to characterize the detailed airflow information in passenger aircraft cabin environment and to validate corresponding numerical simulations.
机译：混合空气通风系统目前在商用飞机环境控制系统（ECS）中使用，这对于创造安全，健康和热舒适的机舱环境至关重要。要评估机舱空气分配的性能，第一步是量化气流如何在机舱内分配。在这项研究中，进行了大规模粒子图像测速（PIV）测量，以表征部分透明的飞机机舱模型内部的混合空气分布。在总共5个大的子区域中进行PIV测量，每个子区域的大小为975 mm×650 mm，以获得一个横截面内的整体流场。分析了PIV测量的系统误差和统计误差。在等温条件和冷却条件下都测量了座舱样机中的空气分布。结果表明，机舱气流速度低，湍流度高。然后，我们研究了冷空气射流和热羽对整体气流模式的影响。分析并比较了两种条件下的速度，涡度和湍流强度的分布。从这项研究中获得的数据将有助于表征客机机舱环境中的详细气流信息并验证相应的数值模拟。

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  • 来源
    《Building and Environment》 |2014年第12期|9-19|共11页
  • 作者

    Xiaodong Cao; Junjie Liu; Jingjing Pei; Yun Zhang; Jiayu Li; Xueliang Zhu;

  • 作者单位

    School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;

    School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China,Room 228, Building 14, Tianjin University, Tianjin 300072, China;

    School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;

    School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;

    School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;

    School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Aircraft cabin; Air distribution; Experiment; PIV; Mixing ventilation;

    机译：机舱;空气分配;实验;PIV;混合通风;

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