液幕床层流动特性通用规律的实验研究  

General Rule of Flow Characteristics in Liquid Screen Bed

作　　者：李娜[1] 周屈兰[1] 孔德娟[1] 徐通模[1] 惠世恩[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049

出　　处：《动力工程》2009年第1期68-72,共5页Power Engineering

基　　金：国家科技支撑计划资助项目(2006AA01B03和2006BAK02B03)

摘　　要：对液幕式吸收塔的重要特性参数——床层高度和气相阻力系数进行了实验研究.根据相似原理,选取合理的控制参数和函数形式,对笔者及其他研究者的实验结果进行了统一处理,得到了通用于多种床层尺度和喷嘴尺寸的结果,包括使用Fr数整理的静态床层高度系数的经验公式、考虑气相流动影响的动态床层高度系数的经验关系式、以及由液相引起的床层气相阻力系数的经验关系式.所有经验关系式均能在较大的尺度范围内通用,并覆盖了工程应用范围,为设计吸收塔结构提供了理论基础.Experimental study was carried out on bed height and gas resistance coefficient, which are the important characteristic parameters of the liquid screen absorption tower. According to the similarity principle, reasonable control parameters and functions were chosen to sort out the experimental data from different researchers so as to obtain the general rules applied to various bed heights and multi-scale nozzles. These general rules include the empirical equation for static bed height coefficient using Fr number, the empirical relation for dynamic bed height coefficient influenced by gas flow and the empirical relation for bed gas resistance coefficient caused by liquid phase. All the empirical relations can be applied in large scale-range and cover the industry application range, providing a theoretical basis for the design of the structure of the absorption tower.

关 键 词：液幕床层 多相流动 流动特性 通用规律 直线型喷嘴 

分 类 号：TK121[动力工程及工程热物理—工程热物理]