Numerical study of natural convection from a vertical array of elliptic cylinders

摘要：

　　This study investigates natural convection heat transfer from a vertical array of five elliptic cylinders numerically.The axis ratio of each cylinder changes in the range from 0.25 to 0.75.ANSYS18.0 is used to study a two-dimensional natural convection for Rayleigh numbers varying in range of 103 to 105.The effect of the axis ratio and center-to-center separation distance from 2 to 5 cylinder major axis are examined.The average Nusselt number of each individual cylinder and the array are investigated to describe the strength of heat transfer.As the separation distance increases,the average Nusselt number of the bottom cylinder in the array basically unchanged,and the average Nusselt number of downstream cylinder increases.The average Nusselt number of the array increases with increasing the Rayleigh number and cylinder spacing.

关键词： Natural convection Elliptic cylinder Vertical array flow diverters Numerical simulation

作者: Zhaohui HE Jinrong ZHU Chunfu CHENG Jinye ZHANG Ni HU

作者单位: Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy,Hubei Universi School of Science,Hubei University of Technology,Wuhan,Hubei,China,430068

会议类型: 国际会议

会议名称: The 17th International Conference on Sustainable Energy Technologies(SET2018)(第17届可持续能源技术国际会议暨2018世界著名科学家来鄂讲学武汉论坛)

会议地点: 武汉

会议语种:英文

页码: 221-229

在线出版日期: 2018-08-21（万方平台首次上网日期，不代表论文的发表时间）