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Experimental and numerical study of room airflow under stratum ventilation

机译：地层通风条件下室内气流的实验与数值研究

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摘要

This paper investigates the air movement, air temperature profile and gaseous contaminant trans-portation in an individual office with stratum ventilation. The room temperature is elevated compared with conventional standards. The experimental investigation is carried out in an environmental chamber with the presence of heat generating rectangles used to simulate an occupant and a computer. Measurements of temperature, velocity, and CO_2 concentration are carried out for nine plumb lines in the chamber. Up to sixteen points are measured along each plumb line. The experimental data of the aforesaid three parameters of the individual office in warm condition under stratum ventilation are presented. The experimental data collected are used to validate a re-normalization group (RNG) k-ε turbulence model used for the warm condition. The agreements between the predicted values and experimental results are acceptable, which demonstrates the feasibility of simulating indoor airflows at elevated room temperature under stratum ventilation by the RNG k-ε turbulence model.
机译：本文研究了具有地层通风的单个办公室中的空气流动，空气温度曲线和气态污染物的迁移。与常规标准相比，室温升高。实验研究是在一个环境室内进行的，其中存在用于模拟乘员和计算机的发热矩形。对室内的9条铅垂线进行了温度，速度和CO_2浓度的测量。沿每条铅垂线最多可测量16个点。给出了在层状通风条件下各个办公室在温暖条件下的上述三个参数的实验数据。收集的实验数据用于验证用于温暖条件的重新归一化组（RNG）k-ε湍流模型。预测值与实验结果之间的一致性是可以接受的，这表明通过RNGk-ε湍流模型模拟在层状通风条件下室温升高的室内气流的可行性。

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  • 来源
    《Building and Environment》 |2011年第1期|p.235-244|共10页
  • 作者

    Zhang Lin; Lin Tian; Ting Yao; Qiuwang Wang; T.T. Chow;

  • 作者单位

    Building Energy & Environmental Technology Research Unit. School of Energy and Environment & Division of Building Science and Technology, City University of Hong Kong, Hong Kong SAR, China;

    rnBuilding Energy & Environmental Technology Research Unit. School of Energy and Environment & Division of Building Science and Technology, City University of Hong Kong, Hong Kong SAR, China;

    rnBuilding Energy & Environmental Technology Research Unit. School of Energy and Environment & Division of Building Science and Technology, City University of Hong Kong, Hong Kong SAR, China;

    rnState Key Lab of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;

    rnBuilding Energy & Environmental Technology Research Unit. School of Energy and Environment & Division of Building Science and Technology, City University of Hong Kong, Hong Kong SAR, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    stratum ventilation; experiments; elevated indoor temperature; CFD model validation;

    机译：地层通风实验;室内温度升高;CFD模型验证;

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