中文摘要：

应用计算流体力学软件Fluent，对某救生舱样舱内热湿环境进行了三维稳态数值模拟，得到了舱内温度场、湿度场的分布情况．模拟结果表明：舱内温湿度能基本满足设计标准，但温湿度分布的梯度较大，相对湿度较低，送风口1对舱内气流的影响区域很小，并且人体头部高度处存在较大涡流区，空气质量较差．针对以上几个方面的问题，提出了气流组织改进方案，修改了两风口的位置与送风参数．改进后的数值模拟表明，舱内平均温度控制在303K左右，相对湿度控制在55％左右，且舱内温湿度分布更加均匀．

英文摘要：

Three dimensional steady numerical simulations are conducted to simulate the thermal and moisture environment in a refuge chamber by using a commercial computational fluid dynamics （CFD） software Fluent, and the distribution characters of temperature and relative humidity fields in the chamber are obtained. The simulation results show that the temperature and relative humidity can basically meet the design standard. However, the distribution gradient of temperature and relative humidity is very large and the relative humidity is quite low. The supply air inlet 1 just has a limited effect on the airflow distribution in refugee chamber. There is a large turbulence zone on the height level of human head, where has a bad air quality. To solve the problems, an improved air distribution plan is presented, which modifies the locations of air distributors and the supply air parameters. The simulation results show that a more uniform distribution of the temperature and relative humidity can be obtained if the improved air distribution plan is applied, and an average temperature of about 303 K and a relative humidity of about 55% can be achieved.