Abstract: 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.

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.