中文摘要：

利用计算流体力学软件FLUENT,以RNGk-ε湍流模型和Eulerian多相流模型对旋转带蒸馏设备内的流场进行了数值模拟.模拟考虑了旋转带的结构因素.结果表明,无开孔的旋转带在高速转动时,设备内的流体会产生界面分离现象,不利于气液两相的密切接触.而有开孔的旋转带在高速旋转时,会有效地改善流体界面的分离,而且气液两相的湍动程度更大,这些现象将有利于气液两相的传质.同时,比较了开孔位置和孔径大小对改善气液界面分离的影响.模拟结果为进一步研究旋转带蒸馏设备的结构优化和操作提供了理论依据.

英文摘要：

The internal gas-liquid flow profile in spinning band column was simulated using commercial computation fluid dynamics （CFD） software FLUENT. The RNG k-ε model and Eulerian muhiphase model were used to simulate gas-liquid flow generated by two different structures of the spinning band. For the band without apertures, the simulation results indicate that there is a separate interface between gas and liquid phase as the rotating speed increase. This phenomenon is not good for gas-liquid intimate contact. While for the band with apertures, the separate interface between gas and liquid phase diminishes even at a high rotating speed. And the gas-liquid flow field is more strongly turbulent, which is good for increasing the efficiency of the separation process. Furthermore, the position and diameter of apertures were also considered in order to provide valuable information for the structural optimization of the spinning band column.