Abstract: The method and characteristics of the design of the ductless induction ventilation system in narrow and tall space of surface ships are analyzed in this article. The numerical simulation method has been introduced to study the influence of the air flow rate, jet angle, longitudinal spacing and transverse spacing of the induction fan and different combinations of induction fans on the air distribution in the narrow and tall space. The recommended combination of the design parameters are given for the induction fans in the specific installation height range. A new piston flow mode is developed by the induction ventilation, which can relatively increase the air age, improve the ventilation effect and help to reduce the pollutant stagnation area and the ventilation dead angle. Solutions and suggestions are proposed to solve the problems of the traditional ventilation system in the narrow and tall space of the surface ships, such as the ventilation dead angle that is easily produced in the ventilation system and the air pollution in the space that cannot be discharged in time.

Key words: surface ship, narrow and tall space, ductless induction ventilation, simulation analysis

摘要： 文章分析了水面舰船狭长高大空间无风管诱导通风系统设计的方法和特点,介绍了利用数值仿真手段研究诱导风机出风风速、射流角度、纵向间距、横向间距及不同诱导风机组合方式对狭长高大空间内气流组织的影响,并对特定安装高度范围的诱导风机设计参数提出建议组合。通过诱导通风形成一种新的活塞流方式,相对延长空气龄,改善通风效果,有利于减少污染物滞止区和通风死角。对传统水面舰船狭长高大空间通风系统容易产生通风死角、空间内污染气体无法及时排出等问题提出解决方案和建议。

关键词: 水面舰船, 狭长高大空间, 无风管诱导通风, 仿真分析