中文摘要：

有效的火和烟繁殖模型为评估是重要的造安全，显示在紧急情况的安全营救路径，并且决定合适的控制策略。在这份报纸，模仿烟繁殖并且描绘混合行为的一个新模型被开发。在这个模型，就在热烟和凉爽的空气之间的混合行为而言的功能被介绍更好在垂直方向解决温度和烟侧面。弄平的粒子水动力学(SPH ) 途径被用来通过重建获得功能分发标记粒子的速度和在在地区的每层的粒子的决定地点当模特儿。模型的基础在这份报纸详细被介绍。测试(有试验性的数据和 CFD 模拟的一座简单大楼)被用来验证模型，试验性的数据和 CFD 模拟来自用 CFAST 实现的一个二层的模型与从新模型和那些的预言相比在是(火和烟运输的巩固的模型，由 NIST 发展了)。新模型结果的有利同意与实验数据或 CFD 模拟被看见。新模型也与二层的模型相比提供温度分发的更多的精确预言。

英文摘要：

An effective fire and smoke propagation model is important for evaluating building safety, indicating safe rescue paths in emergencies, and determining proper control strategies. In this paper, a new model to simulate smoke propagation and to characterize mixing behavior is developed. In this model, a function considering the mixing behavior between the hot smoke and cool air is introduced to better resolve the temperature and smoke profiles in the vertical direction. Smoothed particle hydrodynamics （SPH） approach is used to obtain the function distribution through reconstructing velocities of marker particles and determining locations of particles in each layer in the zone model. The fundamentals of the model are presented in detail in this paper. A test （a simple building with experimental data and CFD simulation） is used to verify the model, in which experimental data and CFD simulations are compared to predictions from the new model and those from a two-layer model implemented using CFAST （Consolidated Model of Fire and Smoke Transport, developed by NIST）. Favorable agreement of the new model results is seen with experiment data or CFD simulations. The new model also provides more accurate prediction of temperature distribution in comparison to the two-layer model.