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| Airflow Distribution for Large Climatic Test Laboratory |
| Received:May 01, 2019 Revised:June 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2019.11.011 |
| KeyWord:large climatic test laboratory airflow distribution CFD |
| Author | Institution |
| MA Jian-jun |
Aircraft Strength Research Institute of China, Xi′an , China |
| JIANG Ya-jun |
Aircraft Strength Research Institute of China, Xi′an , China |
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| Abstract: |
| 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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