湍流模型影响狭长空间内火灾烟气运动的数值研究  

Numerical study about the influence of turbulence model on the movement of fire smoke in a tunnel space

作　　者：王翠华[1] 赵治国[2] 张军[2] 

机构地区：[1]中国水产科学研究院东海水产研究所,上海200090 [2]青岛科技大学环境与安全工程学院,山东青岛266042

出　　处：《计算机与应用化学》2010年第8期1074-1076,共3页Computers and Applied Chemistry

基　　金：中央级公益性科研院所基本科研业务费(2008M11);河南省煤矿瓦斯与火灾防治重点实验室开放基金资助项目(HKLGF200804)

摘　　要：为准确地预测狭长空间内火灾引起的烟气运动,本文研究了不同湍流模型的影响。针对某一巷道内的火灾烟气运动,分别采用考虑浮力修正的双方程湍流模型和大涡模拟方法展开计算。计算结果表明大涡模拟方法的预测值与测量值吻合较好,普通的双方程湍流模型虽然进行了浮升力的修正,但计算结果与实验值仍然存在着一定的差距。For accurately predicting smoke movement induced by fire in a tunnel,the influence of different turbulence models is investigated in the paper.Computational studies are conducted for simulating smoke movement by using k-εturbulence model and LES model.Computational results show that the results from LES model agree well with test data,and the prediction from k-εturbulence model which the effect of buoyancy on the smoke movement is considered still has some difference with test data.

关 键 词：火灾 烟气运动 狭长空间 湍流模型 

分 类 号：X932[环境科学与工程—安全科学] TQ086[化学工程]