马建军,姜亚军.大型气候实验室气流组织仿真分析[J].装备环境工程,2019,16(11):56-63. MA Jian-jun,JIANG Ya-jun.Airflow Distribution for Large Climatic Test Laboratory[J].Equipment Environmental Engineering,2019,16(11):56-63.
大型气候实验室气流组织仿真分析
Airflow Distribution for Large Climatic Test Laboratory
投稿时间:2019-05-01  修订日期:2019-06-25
DOI:10.7643/issn.1672-9242.2019.11.011
中文关键词:  大型气候实验室  气流组织  CFD
英文关键词:large climatic test laboratory  airflow distribution  CFD
基金项目:
作者单位
马建军 中国飞机强度研究所,西安 710065 
姜亚军 中国飞机强度研究所,西安 710065 
AuthorInstitution
MA Jian-jun Aircraft Strength Research Institute of China, Xi′an 710065, China 
JIANG Ya-jun Aircraft Strength Research Institute of China, Xi′an 710065, China 
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中文摘要:
      目的 对大型气候实验室气流组织进行仿真分析,获得合理的气流组织设计方案。方法 首先通过分析旋流风口的特性,建立旋流风口CFD简化模型,然后设计大型气候实验室气流组织形式,最后对极端低温和极端高温工况下不同温度、送风量和送风角度时的气流组织进行CFD仿真分析。结果 低温工况时,地面温度升高将导致室内温度和温度不均匀度整体上升;高温工况时,气流难以抵达地面,且地面温度对高度5 m以下区域有显著影响,对5 m以上空间影响不显著,应增大送风角度,使送风射流方向尽可能向下,以改善地面附近温度均匀性。结论 气流组织仿真分析方法和气流组织设计方案适用于大型气候实验室设计。
英文摘要:
      Objective To have simulated analysis on airflow distribution of large climatic test laboratory and obtain a reasonable designing scheme for airflow distribution. Methods First, a simplified vortex diffuser CFD model was studied based on the flow characters; then the airflow distribution of large climatic test laboratory was designed. At last, two conditions:extreme low temperature and extreme high temperature under different floor temperature, air flow rate and air jet flow angle were studied using CFD method. Results For low temperature test, the rise of floor temperature would lead to overall increase of chamber temperature and un-uniformity. For high temperature test, it’s difficult for air jet flow to reach the floor. The ground temperature had significant influences on the area lower than 5m and had no significant influences on the space higher than 5m. It was better to change the air jet flow angle to allow the air jet flow to reach the floor to improve the temperature uniformity near the ground. Conclusion The air flow distribution simulated analysis and design scheme are applicable to design of large climatic laboratory.
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