作　　者： ; ; ;

机构地区： 南京理工大学动力工程学院瞬态物理国家重点实验室

出　　处： 《高压物理学报》 2006年第2期157-162,共6页

摘　　要： 铝粉的燃烧与加速机理一直是相关部门研究的热点。为了深入研究其在受限空间内的燃烧与传播特性,基于双流体模型、湍流k-ε模型以及铝粉燃烧等模型,选用SIMPLE格式,对大型卧式燃烧管内铝粉颗粒与空气的两相悬浮流湍流燃烧加速转爆炸现象进行了数值研究,得到了铝粉火焰在管内的燃烧传播过程中管内各相关参数的详细变化情况,并与相关的实验结果吻合。 The combustion and acceleration mechanism of aluminum particles has always been the focus of some related research institutes,due to its potential application value. In the present paper,to further the investigation of combustion and propagation characteristics of aluminum particles in a limited space ,the two-fluid model, turbulent k-ε model and combustion model of aluminum particles have been introduced to simulate the combustion propagation of aluminum suspension flow in a large horizontal tube. The SIMPLE scheme has been adopted as the main calculating method to simulate the whole propagation process of two-phase, aluminum particles-air flow in a large and long horizontal tube. The time history of all parameters of two-phase flow during the combustion and propagation process has been revealed based on our calculated results, which agrees well with our previous experimental results.

关 键 词： 铝粉 湍流燃烧 数值模拟 爆炸

领　　域： [理学] [理学] [理学] [理学]