潜艇狭长空间下火灾烟囱温度场特性分析

Submarine stowage compartment fire research based on varied ventilation conditions

潜艇有其独特的结构,其舱室狭小,易燃物多而集中,热量不易散发,加之艇体钢结构,火灾危害性很大。为了研究潜艇狭长空间下火灾烟囱温度场特性,建立了潜艇火灾烟气流动的数学模型和物理模型。采用场模拟计算的方法,利用Phoenics软件对该模型在不同烟囱开口尺寸条件下的火灾烟流进行了数值模拟。给出了不同开口尺寸下火灾烟气温度场的横向和纵向的分布,以及烟囱顶部温度随时间变化的趋势,并分析了烟气温度场随烟囱开口尺寸变化下的发展情况。

Submarine has special structure,as its cabins are narrow,contain many tinders and made in steel structure,so the quantity of fire heat in its cabins is difficult to emit and the damage of the fire are huge.In order to research the fire properties of the chimney in long and narrow submarine space,this paper propose a mathmatical model and a physical model to describe the smoke flow in the chimney,with an experimental submarine model as the research object.On the basis of the proposed models and by using field simulation software phoenics,the fire somke flow in different ventilation size of the chimney is numerically simulated. By means of simulation, the breadthwise and upright distributions of the temperature field are obtained, the temperature change trend in smoke in different chimney ventilation size