中文摘要：

为保证大型舰船机库机械排烟系统的排烟效果，利用正交试验法对多组机械排烟方案进行了数值仿真试验，通过对试验所得数据的极差分析得到了机械排烟系统的最佳配置方案，对比试验验证了机械排烟系统优选方案的有效性。

英文摘要：

In order to investigate the effectiyeness of smoke exhaust system, numerical simulation experiments with groups of mechanical smoke extraction scheme are carried out by the orthogonal test method. The optimal configuration scheme of smoke exhaust system is obtained through range analysis of the data from experiments. The effectiveness of mechanical exhaust system optimization program is verified through contrast experiments.