水喷雾场瞬态蒸汽浓度分布研究  

Study on the Transient Vapor Density Distribution of the Water Sprays Field

作　　者：余鹏[1] 杜永成[2] 

机构地区：[1]海军装备部装备采购中心,北京100071 [2]海军工程大学船舶与动力学院,湖北武汉430033

出　　处：《机电工程技术》2013年第12期66-70,共5页Mechanical & Electrical Engineering Technology

基　　金：国防预研基金资助项目(编号:1010502020202)

摘　　要：考虑到喷雾形成的雾场中,雾滴生存环境的湿度对雾滴的动力学特性、热特性与蒸发特性有着重要的影响,因此对雾场湿度的动态变化进行研究是一项关键的工作。综合考虑变化的蒸发源项与蒸汽扩散之间的相互作用,建立了一维瞬态的湿度控制方程;采用多分散系模型,分析了喷雾区域及其水蒸汽的扩散区域内相对湿度随时间、空间的变化规律;并讨论了雾滴与空气的相对速度、雾滴体积分数、平均粒径及环境相对湿度等因素对于雾场及扩散区域的相对湿度分布的影响。Given that the humidity of droplets living environment in the field of water sprays has important influence to the characteristics of the dynamic,thermal,and evaporation of the droplets,it＇s necessary to make research into the transient variety of humidity of the sprays area. Take the interaction of variational evaporation source term and vapor diffusion into account,a one dimensional transient controlling function of humidity is established. Making use of the polydisperse droplets model,the changing law of the relative humidity, in the area of sprays and diffusion,along with the time and space is analyzed. The factors such as relative velocity between droplets and air,droplets volume fraction,average droplets radius,and relative humidity of ambient are also taken into account for the relative humidity distribution.

关 键 词：雾滴 蒸发 相对湿度分布 多分散系 

分 类 号：TK21[动力工程及工程热物理—动力机械及工程]