Heat transfer augmentation in the straight channel by using nanofluids

被引：32

作者：

Abdolbaqi, M. Kh. ^{[1
]}

Azwadi, C. S. N. ^{[2
]}

Mamat, R. ^{[1
]}

机构：

[1] Univ Malaysia Pahang, Fac Mech Engn, Pekan 26600, Pahang, Malaysia

[2] Univ Teknol Malaysia, Fac Mech Engn, Skudai 81200, Johor Bahru, Malaysia

来源：

CASE STUDIES IN THERMAL ENGINEERING | 2014年 / 3卷

关键词：

Nanofluid; Heat transfer; Straight channel; CFD; FLUENT;

D O I：

10.1016/j.csite.2014.04.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Heat transfer enhancement of nanofluicls under turbulent flow through a straight square channel under constant heat flux conditions at the upper and lower walls is studied numerically. The nanofluids are prepared as solid nanoparticles of CuO, TiO2 and Al(2)0(3) suspended in water. CFD analysis by FLUENT software using the finite volume method is conducted. The boundary conditions are applied under a heat flux of 5000 W/m(2), Reynolds numbers of 10(4)-10(6) and a constant volume concentration of 1-4%. The results show that the heat transfer rates and wall shear stress increase with an increase of the nanofluids 'volume concentration. It seems that the CuO nanotluid significantly enhances heat transfer. The results show good agreement with results of other researchers by a 10% deviation. (C) 2014 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license

引用

页码：59 / 67

页数：9

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