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| Coupled Heat Transfer Analysis of Airflow and Enclosure Structures of Environment Test Chamber |
| Received:October 13, 2015 Revised:April 15, 2016 |
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| DOI：10.7643/issn.1672-9242.2016.02.009 |
| KeyWord:environment test chamber airflow structure enclosure structure coupled heat transfer CFD UDF |
| Author | Institution |
| LIU Hai-yan |
Aircraft Strength Research Institute of China， Xi′ an ， China |
| MA Jian-jun |
Aircraft Strength Research Institute of China， Xi′ an ， China |
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| Abstract: |
| Objective To study the coupled heat transfer of airflow and enclosure structures of environment test chamber during cooling or heating process, in order to provide an accurate method of cooling or heating capacity design for environment test chamber. Methods First, an experiment platform was established based on UC240 test chamber, airflow distribution at the outlet of environment test chamber and temperature curves inside the chamber and on the chamber wall during the cooling or heating process were measured. Then, the cooling and heating process of the chamber was calculated with CFD method, while the measured inlet air velocity and temperature was applied as the boundary conditions. Results The CFD results of temperature curves corresponded well to the experimental results, especially the curve of inner wall temperature, and the error was less than 4 ℃. The supply air temperature could be dynamically calculated according to heat exchanger theory or heating power and outlet temperature. Conclusion Calculation of coupled heat transfer of airflow and enclosure structures of environment test chamber based on CFD method was feasible and accurate. The UDF function of FLUENT could be expanded to help design heat exchanger and control system. |
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