UNSTEADY NATURAL CONVECTION OF NANOFLUIDS IN AN ENCLOSURE HAVING FINITE THICKNESS WALLS

被引：9

作者：

Kuznetsov, Geniy V. ^{[1
]}

Sheremet, Mikhail A. ^{[1
,2
]}

机构：

[1] Natl Res Tomsk Polytech Univ, Inst Power Engn, 30 Lenin Ave, Tomsk 634050, Russia

[2] Tomsk State Univ, Fac Mech & Math, Tomsk 634050, Russia

来源：

COMPUTATIONAL THERMAL SCIENCES | 2011年 / 3卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

numerical simulation; nanofluids; conjugate heat transfer; natural convection; enclosure;

D O I：

10.1615/ComputThermalScien.2011004105

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Numerical simulation of conjugate natural convection in an enclosure filled with Al2O3/water nanofluid has been carried out. The Navier-Stokes and energy equations in dimensionless variables such as "stream function-vorticity-temperature" have been solved numerically. Special attention was paid to the effects of the Rayleigh number Ra-f = 10(4), 10(5), and 10(6), dimensionless time 0 < tau < 1 0 0 0, solid wall thickness, and the thermal conductivity ratio on both local and integral parameters. Detailed results including streamlines, temperature, and vorticity profiles in terms of the key parameters have been obtained. Features of the thermo-hydrodynamic fields due to the presence of the nanoparticles have been determined.

引用

页码：427 / 443

页数：17

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