【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.更多还原

【Abstract】 Field modelling that incorporates increasingly complex representations of the physical and chemical processes for compartment fires warrants a detailed evaluation. The influence of different combustion models and the introduction of radiation model were assessed by comparisons against Steckler experimental data of a single compartment fire in order to check the current predictions made by Fire3D. Detailed quantitative comparisons demonstrate that our predicted velocity and temperature fields show good agreement against the above data when the combustion and radiation models are introduced. The encouraging prospect on the use of Flameletbased combustion model where the incorporation of more detailed chemistry can be realized, especially to predict CO concentrations, together with the discrete ordinates radiation method(DOM)offers potential in building fire prediction.更多还原