用RNGk—ε湍流模型模拟对流型塔板上液相三维流场分布,模拟结果表明在对流型塔板上弓形区域内同样存在着回流区和滞流区。这对传质传热很不利,在此基础上研究了改进流场分布的两种方法:设置导流片和不等高堰,分析后认为设置不等高堰经济合理。 The RNGk-ε turbulence model was used to simulate the three-dimensional flow field distribution on the convective tray. The simulation results show that there are also backflow and stagnation regions in the arcuate region on the convection tray. This is very unfavorable for heat and mass transfer. Based on this, two methods to improve the flow field distribution are studied: the deflector and the non-ish weir are set up, and the analysis shows that it is economically reasonable to set the non-equal height weir.