筛孔塔板浓度场的测量与模拟  

Measurement and numerical simulation of concentration distribution on sieve tray

作　　者：孙志民[1] 刘春江[1] 袁希钢[1] 余国琮[1] 

机构地区：[1]化学工程联合国家重点实验室(天津大学),天津大学化工学院天津300072

出　　处：《化工学报》2006年第8期1877-1883,共7页CIESC Journal

基　　金：国家自然科学基金项目(20136010;20476072).~~

摘　　要：通过测量被纯氧饱和的水在塔板上发生氧解吸时液相氧浓度,得到了伴有传质的浓度场,并发现在速度返流区会出现浓度旋涡.使用计算传质学的方法对塔板浓度场进行了数值模拟,计算值与实验值符合得较好.通过模拟,同时得到了湍流传质扩散系数的分布.The concentration profiles of dissolved oxygen were experimentally measured when the water saturated with pure oxygen flowed through a sieve tray. The measured results showed that a concentration eddy existed in the sector where circulating flow took place. With a computational mass transfer （CMT） model, the distribution of concentration was simulated and compared with the experimental data. The simulated results were in reasonable agreement with the measurement. The turbulent mass transfer diffusivity profile was also obtained by the simulation.

关 键 词：浓度场 计算传质学(CMT) 测量 筛板塔 湍流传质扩散系数 

分 类 号：TQ028.1[化学工程]