三角形螺旋填料旋转床气相压降的数值模拟  

Numerical simulation on pressure drop of rotating packed bed with triangular spiral packing

作　　者：吴祖钰[1] 阮奇[1] 凡书杰[1] 严佐毅[1] 刘国伟[2] 

机构地区：[1]福州大学化学化工学院,福建福州350108 [2]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《计算机与应用化学》2011年第6期704-708,共5页Computers and Applied Chemistry

基　　金：福建省教育厅科技基金资助项目(JB06041)

摘　　要：为研究三角形螺旋填料旋转床内部流场的复杂流动,建立了正三角形结构的填料物理模型来描述实际的三角形螺旋填料,并基于Gambit-Fluent的计算平台,采用realizable k-ε湍流模型对逆流旋转填料床进行气相干床压降的计算流体力学(CFD)模拟。结果表明:正三角形填料模型比较符合大比表面积,高空隙率的三角形螺旋填料的实际情况;气相在填料表面剧烈湍动,对强化传质极为有利;不同气体流量和转速下的正三角形填料旋转床气相干床压降的CFD模拟值与三角形螺旋填料床气相干床压降的实验值较吻合,两者的平均相对误差为15.8%。To study the complex internal flow of rotating packed bed（RPB）with triangular spiral packing,regular triangular model was established to describe the actual triangular spiral packing,pressure drop（dry bed）of a countercurrent rotating packed bed with this packing model was simulated by realizable k-εturbulence model based on the calculation platform of Gambit-Fluent.The result indicates that the positive triangular model is fit for the actual situation of triangular spiral packing of large specific surface area and high pore ratio.Violent turbulent of air happens in the packing surface, mass transfer was greatly strengthen.The Average relative error of pressure drop（dry bed）between CFD simulation and experimental results is about 15.8%,which is under the different gas flux and rotational speed in the RPB with regular triangle packing.

关 键 词：三角形螺旋填料 旋转填料床 CFD模拟 压降 

分 类 号：TQ051.8[化学工程]