摘要
运用Zukoski、Hsjestad、McMaffrey、Thomas和FDS模型在三种无量纲火源强度场景中比较羽流质量流率、羽流中心线速度和羽流中心线温升的计算结果。结果:1对于羽流质量流率,无量纲火源强度较小时建议采用McCaffrey和Thomas模型来计算;2对于羽流中心线速度,Zukoski、Heskestad、McCaffrey及FDS模拟结果比较一致;3对于羽流中心线温升,在三个场景中,Zukoski、Heskestad和McCaffrey模型计算结果均高于FDS模拟结果。结论:为计算不同轴对称羽流场景时模型的选择及FDS的适用性提供参考。
The calculation results of the plume mass flow rate, the plume centerline velocity and the plume centerline temperature rise in three non-dimensional fire power scenarios are calculated and compared by Zukoski, Hskestad, McCaffrey, Thomas and FDS models. Results： ① For the plume mass flow rate, when the non-dimensional fire strength is lesser, McCaffrey and Thomas models are suggested. ②For the plume centerline velocity, the simulation results of Zukoski, Hskestad, McCaffrey and FDS are uniformity. ③For the plume centerline temperature rise, the simulation calculation results of Zukoski, Hskestad and McCaffrey in three scenarios are higher than that of FDS. Conclusion： It may supply reference for the choosing model in different axissymmetric plume scenario and the suitability of FDS.
出处
《消防科学与技术》
CAS
北大核心
2009年第8期555-559,共5页
Fire Science and Technology
关键词
火灾
火灾模型
数值模拟
fire
fire model
numerical simulation
