Thermal instability in a nanofluid saturated horizontal porous layer subjected to g-gitter

被引：4
|
作者：
Govender, S. [1 ,2 ]
机构：
[1] ESKOM Holdings Ltd, Corp Specialist Gas Turbines & Thermoflow Syst, Technol Engn, Maxwell Dr, ZA-2000 Johannesburg, South Africa
[2] Univ Kwazulu Natal Durban, Sch Mech Engn, King George V Ave, ZA-4001 Durban, South Africa
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2017年 / 110卷
关键词：
Nanofluid; Porous media; Rayleigh number; Thermophoresis; Brownian motion; Heat transfer; Mathieu equation; g-gitter; Vibration; CONVECTION; STABILITY;
D O I：
10.1016/j.ijheatmasstransfer.2017.03.018
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An analytical investigation of the onset of convection in a horizontal porous saturated by a nanofluid, and subjected to g-gitter (or vertical vibration) is presented. The Darcy model is used for the porous layer and a linear stability analysis is used to determine the convection threshold in terms of the key parameters for the nanofluid in a homogenous porous medium. The results are presented for the special case when the porosity to heat capacity ratio is unity. The critical Rayleigh number and wavenumber is presented in terms of the nanofluid parameter. (C) 2017 Published by Elsevier Ltd.
引用
收藏
页码：63 / 67
页数：5
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