HEAT AND MASS TRANSFER IN POROUS MEDIA DRYING DRYING:A TWO- TWODIMENSIONAL DIMENSIONAL NUMERICAL SIMULATION

摘要：

A cylindrically two-dimensional mathematical model of simultaneous heat and mass transfer for porous media drying was derived and solved numerically based on the Whitaker’s theory in the present study.The control-volume method with the fully implicit scheme was applied for discretization of the governing equations.Physical properties of apple were selected in the simulation.Under typical operating conditions, heat and mass transfer mechanisms were analyzed based on profiles of temperature and saturation inside particles.Effects of temperature, relative humidity, inlet velocity of hot gas and bed area factor were examined under different operating conditions.Simulation results show that the drying process can be significantly affected by coupled heat and mass transfer between gas and solid phases.The drying time decreases with increase in temperature and inlet velocity of hot gas, while increases with increase in humidity and bed area factor.

关键词： heat and mass transfer porous media drying two-dimensional numerical simulation cylindrical

作者: Luyao Wang Wei Wang Yanqiu Pan Guohua Chen

作者单位: College of Life Science,Dalian Nationalities University,Liaohe West Road 18,DalianDevelopment Zone,D College of Life Science,Dalian Nationalities University,Liaohe West Road 18,DalianDevelopment Zone,D Department of Chemical Engineering,Dalian University of Technology,Linggong Road2,Dalian 116024,Chin Biomolecular Engineering,The Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,

会议类型: 国际会议

会议名称: The 7th Asia-Pacific Drying Conference(第七届亚太地区干燥会议 ADC2011)

会议地点: 天津

会议语种:英文

页码: 1-8

在线出版日期: 2011-09-18（万方平台首次上网日期，不代表论文的发表时间）