摘要
目前研究火灾的模型由于不能很好地反映烟气的流动特性和温度场的分布,以及存在对非规则空间的局限性。采用GAMBIT对潜艇舱室非规则空间进行网格划分,运用N-S时均方程和双k-ε湍流模型对流场进行理论计算,结合燃烧化学反应为单步不可逆快速反应假设,对舱室内的火灾发展过程进行模拟。通过临界火灾发展和蔓延的临界时间制定消防决策。文章为潜艇的消防决策研究提供了一种实时可靠的研究方法。
At present, the model of studying fire cannot reflect the flow feature of smoke and gas as well as the distribution of temperature field very well. Also, it has limitation for the irregular space. The GAMBIT was used to generate the meshes for the irregular shapes of submarine cabin, and the N-S time-mean equation and k-s turbulent flow model were used to compute the flow filed. Under the as- sumption that the combustion chemical reaction is irreversible, fire developing process in the cabin was simulated. Through the critical fire development and the critical fire spreading time, firefighting decisions can be made. Therefore, a real-time and reliable research method is established to provide strategies in submarine fire fighting.
出处
《中国舰船研究》
2010年第1期34-38,共5页
Chinese Journal of Ship Research
关键词
火灾模拟
湍流模型
N—S时均方程
fire model
turbulent flow model
N-S time-mean equation
