室内火灾数值模拟方法的探讨  

Numerical Study on Compartment Fires by Using CFD Technique

作　　者：陈大宏[1] 袁国杰[2] GUAN Heng-yeoh 杨小亭[1] 方正[1] 

机构地区：[1]武汉大学水利水电学院,武汉430072 [2]香港城市大学建筑学系 [3]澳大利亚原子能科学技术委员会原子能技术部

出　　处：《燃烧科学与技术》2003年第2期100-103,共4页Journal of Combustion Science and Technology

基　　金：中国香港研究局(RGC)资助项目(7001090;9040494).

摘　　要：通过场模拟方法与Steckler的单室火灾实验资料比较,验证了作者开发的火灾场模拟模型Fire3D,同时讨论了不同燃烧模型和热辐射对计算结果的影响.定量比较显示,如果考虑燃烧和热辐射的模拟,则Fire3D能够提供与实验相吻合的速度和温度.CO含量是建筑火灾预报中的重要指标,以Flamelet为基础的燃烧模型能计算出CO浓度.Flamelet模型和模拟热辐射的DOM方法联合运用会比较适合于建筑火灾的预报,值得进一步探讨.Field simulation that incorporates increasingly complex representation of the physical and chemical processes for compartment fire warrants a detailed evaluation. The influence of different combustion models and the introduction of radiation model were assessed by comparison with Steckler experimental data of a single compartment fire in order to check the current prediction made by Fire3D. Detailed quantitative comparison demonstrates that the predicted velocity and temperature fields are in good agreement with the above data when the combustion and radiation models are introduced. The encouraging prospect on the use of Flamelet-based combustion model can be realized, especially to predict CO concentration together with the discrete ordinates radiation method offers potential in building fire prediction.

关 键 词：建筑火灾 燃烧模型 场模拟 火灾数值模拟 CFD 

分 类 号：TU998.12[建筑科学—市政工程]