Experimental study of transient natural convection in an inclined porous enclosure with time-periodically-varying wall temperature

doi:10.1115/imece2011-65085

	Experimental study of transient natural convection in an inclined porous enclosure with time-periodically-varying wall temperature
	Zeng, M.1; Wang, G.2; Ren, Y.C.3; Ozoe, H.4; Wang, Q.W.1
	2011
会议名称	ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
会议录名称	ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
卷号	4
期号	PARTS A AND B
页码	895-902
会议日期	November 11, 2011 - November 17, 2011
会议地点	Denver, CO, United states
出版者	American Society of Mechanical Engineers (ASME)
摘要	The transient natural convection in an inclined enclosure filled with porous media is studied experimentally and numerically for the time-periodically-varying wall temperature on one side wall and constant average temperature on the opposing side wall. This system has no temperature difference between the opposing two side walls in time-averaged sense. The porous media with three kinds of porosity consist of water and three kinds of glass ball with different diameter. The temperature and heat flux across the two above-mentioned walls are measured by a heat flux meter. The effects of inclined angles and porosity of the enclosure on heat transfer characteristics have also been studied. The experimental results show that, with the upper wall temperature oscillating, the heat flux across the enclosure is also periodically varied with time. However, the net heat flux is always from the lower wall to the upper wall and reaches maximum at a certain inclined angle. Numerical computations are also conducted and numerical results are qualitatively assured by the experimental measurements. [Keywords; transient natural convection; inclined porous enclosure; time-periodically-varying wall temperature; net heat flux; no temperature difference in time-averaged sense]. Copyright © 2011 by ASME.
关键词	Enclosures Natural convection Porosity Porous materials Systems analysis Temperature Heat transfer characteristics Inclined enclosure Numerical computations Numerical results Temperature differences Transient natural convection Varying wall temperature Wall temperatures
DOI	10.1115/imece2011-65085
收录类别	EI
语种	英语
EI入藏号	20124715697214
EI主题词	Heat flux
来源库	Compendex
分类代码	641.1 Thermodynamics - 641.2 Heat Transfer - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science - 961 Systems Science
引用统计	无
文献类型	会议论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/117011
专题	兰州理工大学土木工程学院
作者单位	1.MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 3.FTEC Engineering Co., Ltd., 131 North Heping Road, Taiyuan, 030027, Shanxi, China; 4.Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga Koen 6-1, Kasuga 816-8580, Japan
推荐引用方式 GB/T 7714	Zeng, M.,Wang, G.,Ren, Y.C.,et al. Experimental study of transient natural convection in an inclined porous enclosure with time-periodically-varying wall temperature[C]:American Society of Mechanical Engineers (ASME),2011:895-902.