金属泡沫–水的自然对流换热实验研究
Experimental Investigation of Natural Convection in Metal Foam-Water
DOI: 10.12677/APF.2016.61001, PDF, HTML, XML, 下载: 2,205  浏览: 5,862  国家自然科学基金支持
作者: 彭 招, 潘 阳, 钱维扬：华东交通大学土木建筑学院，江西 南昌
关键词: 金属泡沫–水；自然对流；温差；孔密度；Metal Foam-Water； Natural Convection； Difference of Temperature； Pore Density
摘要: 本文针对多孔介质材料中的自然对流换热问题，通过搭建充满金属泡沫–水的实验装置，探究了金属泡沫–水自然对流换热机理，讨论了加热功率、箱体倾斜角度对方腔内金属泡沫-水两相自然对流换热的影响，实验发现努谢尔数Nu随加热功率的增加而变大，随着倾斜角度的增大而变小，随着金属泡沫孔密度PPI的增大而减小。最终得到了箱体水平放置时5 PPI和10 PPI努谢尔数Nu随瑞利数Ra的变化规律。
Abstract: In this paper, an experiment apparatus filled with metal foam-water is set up to investigate the problem of natural convection about porous medium. A mechanism of natural convection of metal foam-water is investigated by experiments. Influences of heating power and angle of inclination on natural convection in the cavity filled with metal foam-water are discussed. It is found that the Nusselt number increases with heating power and decreases with the angle of inclination and pore density PPI of metal foam. A correlation of Nusselt number and Raleigh number is obtained when the cavity is horizontal with 5 PPI and 10 PPI.
文章引用：彭招, 潘阳, 钱维扬. 金属泡沫–水的自然对流换热实验研究[J]. 渗流力学进展, 2016, 6(1): 1-8. http://dx.doi.org/10.12677/APF.2016.61001

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