中文摘要：

在Harriott理论的基础上，提出一种新的垂直降膜吸收传质模型，将降膜过程中漩涡的作用点由一个几何点扩展到一个区域，将整个降膜流动过程划分为非湍流区和全湍流区．非湍流区内，波峰和波谷域采取了不同的Levich厚度处理方法．在全湍流区，对波动速度进行了修正．理论数据与氨水光管降膜吸收实验数据相比较，偏差在非湍流区不超过10g，在全湍流区不超过15％．扩散系数、Levich厚度及波动周期对传质系数的影响被表示为两个量纲1量之间的关系．

英文摘要：

On the basis of Harriott＇s theory, a new mass transfer model was presented. It expanded the working point of eddy in falling-film absorption from a geometric point to an area, and divided the whole flow into a turbulent flow zone and a non-turbulent flow zone. When the flow was non-turbulent, Levich thickness was handled in different ways in wave trough zone and wave crest zone. The velocity of wave motion was amended in the turbulent flow zone. The deviation between the model and experimental data of ammonia water falling-film absorption on a smooth vertical tube was not more than 10% in the turbulent flow zone and 15% in the non-turbulent flow zone. The influences of diffusion coefficient, Levich thickness and wave period on mass transfer coefficient were expressed correlation as the relation of two nondimensional numbers.