摘要
为系统研究通风系统参数对空间站居住舱人活动区内气流分布的影响,建立了空间站居住舱人活动区及供风管道的物理模型,并采用CFD方法对人活动区流场进行了数值仿真,同时提出舱内名义平均速度vm=m/A1A2作为衡量舱内气流分布的特征参数。结果表明:(1)增加散流器阻力,可改善散流器出口流量的均匀性;(2)舱内名义平均流速综合反映了供风流量、散流器截面积和人活动区水平截面积的影响。经过研究发现,在人活动区通风系统设计过程中,要获得满足空间站要求的流速分布,应尽量选择高于30°的进风角度,同时选择合适的舱内名义平均流速值,而名义平均流速值大小与回风口形式、进风角度及散流器位置有关,并受到散流器出口速度小于1.012m/s的限制。
In order to investigate the influence of ventilation system parameters on velocity distribution in Habitation cabin, this paper built the physical models of habitation cabin with air supply pipe and simulated velocity distribution by CFD method. In addition, nominal average velocity of cabin was proposed to evaluate velocity distribution. The results showed that: (1) the difference between different diffuser flux can be reduce by improve the resistance of diffuser; (2) The nominal average velocity of cabin can reflect synthetically the influence of inflow flux and diffuser area and horizontal sectional area of cabin on velocity distribution. In the ventilation system design of habitation cabin, we should select the appropriate diffuser angle and the nominal average velocity of cabin.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2009年第3期1218-1224,共7页
Journal of Astronautics
关键词
空间站
通风系统
居住舱
设计参数
气流分布
数值模拟
Space station
Ventilation system
Habitation cabin
Design parameter
Velocity distribution
Simulation