技术中心

【英文篇名】 Numerical simulation on air age in manned spacecraft cabins 【作者中文名】 梁珍; 张吉礼; 陆亚俊; 【作者英文名】 Liang Zhen; Zhang Jili and Lu Yajun Harbin Institute of Technology; Harbin; China; 【作者单位】 哈尔滨工业大学; 【文献出处】 暖通空调, Heating Ventilating 空气龄; 送风模式; 风口布置; 数值模拟; 【英文关键词】 manned spacecraft cabin; air age; air supply mode; air outlet collocation; numerical simulation; 【摘要】 建立了一个包含乘员、仪器设备和简单生活设施在内的载人航天器座舱物理模型,采用房间零方程湍流模型模拟了座舱工作区的空气龄分布。送风模式为舱顶两侧45°斜送风,风口布置采用了连续对称布置、间隔对称布置和间隔交错布置3种方案。模拟结果显示,连续对称布置会产生分叉现象,不建议采用;间隔交错布置优于间隔对称布置,并在送风速度为1．1 m／s左右时换气效率最高;在舱壁附近有乘员长期工作的情况下,乘员呼吸区的空气龄偏大,建议采用个性化送风来解决此问题。 【英文摘要】 Develops a physical model of manned spacecraft cabin which contains astronauts, apparatus and simple living installations, and numerically simulates the air age distribution in workplaces by use of a zero-equation turbulence model. Air is supplied by air outlets installed in the two top corners with 45 degree, and air outlets are collocated with continuous symmetry, alternative symmetry and alternative stagger modes. Simulation results show that bifurcation phenomenon would appear at continuous symmetry mod...