摘要
本文主要通过数值计算的方法来研究火旋风这一火灾过程中特殊的物理现象,通过对已经过验证的火旋风发生物理模型的分析,经过简化和改进,并应用有限体积元法对所得到的一组控制方程进行求解,研究了火旋风内部的温度场分布,以及不同的进气速度对火旋风内部温度场的影响,进而对火旋风的产生过程进行了分析。
In this paper, fire whirl, a special physical phenomenon in the process of fire, is studied by the numerical computation. By analyzing the physical model which was verified by experiment, a reasonable numerical model is simplified and improved. With the K-ε turbulence model, the governing equations are analyzed and the temperature distribution of the fire whirl is investigated in different cases, whereby a simple qualitative analysis of the dynamical progress of fire whirl is discussed.
出处
《火灾科学》
CSCD
2005年第4期216-220,共5页
Fire Safety Science
基金
火灾科学国家重点实验室资助项目(HZ2005-KF08)
国家重点基础研究发展规划项目(2001CB409600)
关键词
火旋风
数值模拟K-ε湍流模型
扩散燃烧
温度场分布
fire whirlwind
numerical simulation
K-ε turbulence model
diffusion combustion
the field of temperature
