Numerical simulation of upside air-supply bottom-side air-return symmetric ventilation in space station cabin

作者：Zheng Zhong Hai^*; Zhang Ji Li; Liang Zhen

来源：Journal of Harbin Institute of Technology, 2007, 39(2): 270-273.

• Air supply velocity
• Bifurcation phenomena
• Convection heat exchange
• Field velocity
• Numerical simulation
• Space station cabin
• Symmetric ventilation
• Ventilation air conditioning
• Ventilation pattern

The classical numerical simulation of enclosed square cavity natural convection is verified firstly. Then the upside air-supply bottom-side air-return symmetric ventilation pattern is simulated numerically under different conditions. It concludes that this ventilation pattern could be optimum and bifurcation phenomena could exist under certain conditions. And that natural convection could be neglected when the value of dimensionless number Gr/Re is less than 5 or microgravity is less than 10-3 g0. It suggests that air-supply angle could choose between 30 and 60, and at angle 45, the field velocity is maximum and air-supply velocity less than 1 m/s could be optimum.

• 出版日期2007