کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11000952 | 1428348 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental and numerical study of space station airflow distribution under microgravity condition
ترجمه فارسی عنوان
بررسی تجربی و عددی توزیع هوا در ایستگاه فضایی تحت شرایط میکرو گرانشی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
A space station that operates under microgravity conditions is a closed environment where a reasonable airflow distribution is required to eliminate body heat dissipation, remove contaminants and thus keep the crew comfortable. However, design of a reasonable airflow distribution has remained challenging. In this study, a computational fluid dynamics (CFD) methods with various turbulence models were used to investigate the airflow distribution inside a space station under microgravity conditions. To compare the performance of different models, the shrinkable ratio method was used to set up a mockup station to eliminate the influence of gravity-induced natural convection. The air velocity distribution in the narrow scale model was measured using particle image velocimetry (PIV). Results showed that the performance of the standard k-ε turbulence model was better than the renormalized group (RNG) k-ε turbulence model. The air distribution was optimized by changing the angle of the air supply outlet, suggesting that a three-dimensional air supply can provide better thermal comfort and higher air quality.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Building and Environment - Volume 144, 15 October 2018, Pages 268-280
Journal: Building and Environment - Volume 144, 15 October 2018, Pages 268-280
نویسندگان
Congcong Wang, Junjie Liu, Wenjin Shang, Hejiang Sun, Jiayu Li, Fenghua Fan,