Axisymmetric steady flow, assume the axialdiffusion is negligible compared with the radial diffusion, axial convection and the radial convection.
轴对称稳态流，假设轴向扩散相比径向扩散、轴向对流和径向对流是可忽略的。
2
An example was given to show the influence of the radial, axialdiffusion and actual liquid velocity on the performance of an actual MTBE catalytic distillation column.
通过甲基叔丁基醚工业塔实例，阐述了液相轴向、径向扩散系数与液相有效流速对催化精馏过程的影响。
3
The axial dispersion in chromatography models was discussed with vector method and the effect of diffusion on the bulk flow flux with its partial quantity form was pointed too.