Effects of inclination angle on natural convection in enclosures filled with Cu-water nanofluid

被引：483

作者：

Abu-Nada, Eiyad ^{[1
]}

Oztop, Hakan F. ^{[2
]}

机构：

[1] Hashemite Univ, Dept Mech Engn, Zarqa 13115, Jordan

[2] Firat Univ, Dept Mech Engn, TR-23119 Elazig, Turkey

来源：

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | 2009年 / 30卷 / 04期

关键词：

Nanofluids; Enclosure; Natural convection; Inclination angle; HEAT-TRANSFER ENHANCEMENT; RECTANGULAR ENCLOSURES; TRANSFER COEFFICIENT; SQUARE CAVITY; WALLS; FLOWS; AIR;

D O I：

10.1016/j.ijheatfluidflow.2009.02.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Effects of inclination angle on natural convection heat transfer and fluid flow in a two-dimensional enclosure filled with Cu-nanofluid has been analyzed numerically. The performance of nanofluids is tested inside an enclosure by taking into account the solid particle dispersion. The angle of inclination is used as a control parameter for flow and heat transfer. It was varied from = 0 degrees to = 120 degrees. The governing equations are solved with finite-volume technique for the range of Rayleigh numbers as 10(3) <= Ra <= 10(5). It is found that the effect of nanoparticles concentration on Nusselt number is more pronounced at low volume fraction than at high volume fraction. Inclination angle can be a control parameter for nanofluid filled enclosure. Percentage of heat transfer enhancement using nanoparticles decreases for higher Rayleigh numbers. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：669 / 678

页数：10

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