规整填料单元内流场的三维LDV测量  

LDV measurements of flow field in a unit of structured packing

作　　者：刘春江[1] 李莹珂[1] 黄莹[1] 陈江波[1] 袁希钢[1] 余国琮[1] 

机构地区：[1]天津大学化学工程研究所化学工程联合国家重点实验室(天津大学),天津300072

出　　处：《化工学报》2006年第7期1543-1547,共5页CIESC Journal

基　　金：国家自然科学基金项目(20206021);天津市自然科学基金项目(04318511121).~~

摘　　要：It has long been recognized that the flow pattern,especially the velocity distribution of the fluid,is of great importance in determining the performance of the equipment using structured packing as its internals.By using three-dimensional laser Doppler velocimetry(LDV),the liquid velocity distribution of the glycerol aqueous solution was measured in a typical unit of structured packing(Mellapak 350Y).Time averaged three-dimensional velocity distributions of the unit were measured at different flow rates.The experimental data showed that the liquid velocity profile of the single phase flow was complex because of the special geometry of the unit of structured packing.In the central region of the unit,the liquid was mixed strongly and re-distributed.It was the main cause generating the vortexes and secondary flow.It has long been recognized that the flow pattern, especially the velocity distribution of the fluid, is of great importance in determining the performance of the equipment using structured packing as its internals. By using three-dimensional laser Doppler velocimetry （LDV）, the liquid velocity distribution of the glycerol aqueous solution was measured in a typical unit of structured packing （Mellapak 350Y）. Time averaged three-dimensional velocity distributions of the unit were measured at different flow rates. The experimental data showed that the liquid velocity profile of the single phase flow was complex because of the special geometry of the unit of structured packing. In the central region of the unit, the liquid was mixed strongly and re-distributed. It was the main cause generating the vortexes and secondary flow.

关 键 词：激光多普勒 规整填料 流场测量 

分 类 号：TQ028.1[化学工程]