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中文摘要：
为探索旋转填充床内的气相流场分布,本文对旋转床里的填料进行简化,建立了旋转床的二维物理模型。采用Fluent软件的标准k-ε模型模拟床内的气相流场,计算气体压降,并分析了气体在径向分布情况。结果表明：旋转填充床的压降主要集中在填料层内,压降随气体流量、转速的增加而增加,与实验数据相比,最大平均误差约22.6%;对于不同入口方式和内构件的旋转床,压降大小顺序为：切向入口〉径向加挡板〉径向加开孔挡板〉径向入口,其中径向加挡板的旋转床内气体分布的均匀性较差。
英文摘要：
In order to explore the distribution of the gas flow field in a rotating packed bed （RPB）, a two-dimen- sional physical model of a RPB has been established, using AutoCAD software and simplifying the packing--which is the most important part in a RPB. The standard k-e turbulence model was used to simulate the gas flow field and to calculate the pressure drop in a countercurrent RPB based on the Gambit-Fluent calculation platform. The radial distribution of the gas was also analyzed. According to the contours of total pressure, it was found that the main pressure drop in a RPB exists in the rotating packing zones. The simulation results indicated that the pressure drop rises when the gas flow rate and speed increase, and the maximal relative error was about 22.6% when compared with experimental data. For several RPBs whose designs had different inlets or inner components, the pressure drop decreased in the order tangential inlet 〉 radial inlet with baffle （whose uniformity of the gas distribution was the worst） 〉 radial inlet with pore baffle 〉 radial inlet.
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