本文将两种不同的气道尺寸,利用Moldflow软件对气体在四种不同布置的气道内的穿透过程进行了数值模拟,结果表明:同样的气道尺寸、不同的气道布置以及相同的气道布置、不同的气道尺寸,其气体的薄壁穿透程度都是不同的。因此在气道设计中,应合理选择气道尺寸和气道布置。最后还给出了气道设计的一般原则。 In this paper, two different airway sizes were simulated by Moldflow software in four different airway configurations. The results show that the same airway size, different airway layout and the same gas Road layout, different airway size, the gas penetration of the thin wall are different. Therefore, in the airway design, the airway size and airway should be properly selected. Finally, the general principles of airway design are also given.