根据国际空间站实际舱体结构建立相似试验模型，进行舱室微重力环境有强迫通风情况火灾烟雾分布规律数值模拟研究。气流组织形式采用顶部45°斜向进风和底板出风口自然通风，利用FLUENT软件进行舱室内气流组织数值模拟，考察强迫通风能否满足航天员热舒适性要求在保证舱室内热舒适性的同时加入火源，考察微重力环境强迫通风舱室内火灾烟雾浓度分布情况。火源位置分别设置在底面中心和侧壁中心，采用LES（Large Eddy Simulation）方法求解Navier—Stokes方程。模拟研究结果可为航天器舱内光电感烟型早期火灾探测器的合理安装提供理论指导。%Based on the structure of the international space station＇s actual cabin, a similar experimental model was established to conduct the numerical simulation research of the distribution of fire smoke in sealed cabin with foreced ventilation in mierogravity environment. There is forced ventilation of 45° diagonal inlet airflow from the top and bottom outlet of natural ventilation. FLUENT software is used for numerical simulation of the indoor airflow to check whether the thermal comfortableness requirements of the astronauts can be met. At the same time, fire is introduced to study the distribution of fire smoke concentration in the sealed cabin and with forced ventilation in microgravity environment . The fire is set both in the center of floor and the wall, and Large Eddy Simulation （LES） method is used to solve the Navier-Stokes equations. The simulation results could provide theoretical guidance for reasonable installation of photoelectric smoke detectors in spacecraft＇s cabin.
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