An improved CFD model of gas flow and particle interception in a fiber material

查看全文 作　　者：Zhiwei [1,2]Sun;Jianhui [1]Wen;Xiao [2]Luo;Wen [1]Du;Zhiwu [2]Liang;Kaiyun [2]Fu

机构地区：[1]Technology Center of China Tobacco Hunan Industrial Co.,Ltd.;[2]Joint International Center for CO2 Capture and Storage (iCCS),Hunan Provincial Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing CO2 Emissions,College of Chemistry and Chemical Engineering,Hunan University

出　　处：《Chinese Journal of Chemical Engineering》索引2017年第25卷第3期,共10页

基　　金：Supported by Technology Center,China Tobacco Hunan Industrial Co.,Ltd.(KY2014KF0002);the National Natural Science Foundation of China(21536003);Innovative Research Team Development Plan-Ministry of Education of China(IRT1238);Key project of international®ional scientific and technology plan(2014WK2037);China Outstanding Engineer Training Plan for Students of Chemical Engineering&Technology in Hunan University(2011-40) 摘　　要：An improved CFD model of gas flow and particle interception in a fiber material which fiber size is Y-shape was developed in this work. The porous medium model was used to build the model of the whole size of fiber filter medium. Mixture model was adopted. The algorithm of particle interception in the whole size of fiber filter medium was derived and UDF(User Defined Function) that described kinds of particle filtering mechanisms in filter fibrous media was added to the Fluent default conservation equation as source term for simulation. The inertial resistance of the filter was taken into consideration, which provided a more precise measurement of the smoke flow and the particle interception in the filter under higher smoke speed conditions. The commercial software, Fluent 6.3, was used to simulate the smoke flow and particle interception in the filter in a single suction. The velocity and pressure profiles of smoke or nicotine particle in the filter, as well as nicotine particle volume fraction profile were well simulated. Finally, the comparisons of nicotine particle filtration efficiency between Fluent simulation results in this work and experimental results, as well as the model prediction in the literature were made to validate the simulation model. The comparisons showed that the particle entrapment model from simulation results was in good agreement with that from the experimental results. In addition, the Fluent simulation results are closer to reality both at the beginning and the end of the smoke process comparing with the model predicted results in the literature. 关键词：颗粒体积分数 CFD模型气体流动纤维材料截留量 FLUENT软件多孔介质模型数值模拟

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An improved CFD model of gas flow and particle interception in a fiber material

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