文章基本信息

标题：Natural convection induced by undulated surfaces in a porous enclosure filled with nanoliquid
本地全文：下载
作者：Abeer Alhashash ; Habibis Saleh
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2019
卷号：11
期号：9
页码：1-9
DOI：10.1177/1687814019875284
出版社：Sage Publications Ltd.
摘要：Effect of surface undulation on convective flow in a porous enclosure is investigated in this present article. The porous enclosure is filled with a water-base nanoliquid containing Cu solid nanoparticles, and the porous layer is modeled using the Darcy law. The governing equations are solved numerically using the built-in finite element method of COMSOL. The investigation was carried out for several parameters: the nanoparticle concentration, ϕ ; the amplitude of undulations, A ; the number of undulations, N ; and the Rayleigh number, Ra . It is concluded that the strength of the nanoliquid circulation increases with increasing the amplitude or number undulations. It is found that the heat transfer rates were sensitive to the variation of undulation property, convection intensity, and nanoparticle concentration.
其他关键词：Nanoliquid ; natural convection ; porous medium ; wavy enclosure ; finite element method