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

doi:10.1115/imece2011-65085

CORC > 兰州理工大学 > 兰州理工大学

	Experimental study of transient natural convection in an inclined porous enclosure with time-periodically-varying wall temperature
	Zeng, M.4; Wang, G.2; Ren, Y.C.3; Ozoe, H.1; Wang, Q.W.4
	2011
会议日期	November 11, 2011 - November 17, 2011
会议地点	Denver, CO, United states
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
卷号	4
期号	PARTS A AND B
DOI	10.1115/imece2011-65085
页码	895-902
英文摘要	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.
会议录	ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
会议录出版者	American Society of Mechanical Engineers (ASME)
语种	英语
内容类型	会议论文
源URL	[http://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.Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga Koen 6-1, Kasuga 816-8580, Japan 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.MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China;
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]. 见:. Denver, CO, United states. November 11, 2011 - November 17, 2011.