The Effect of Local Thermal Nonequilibrium on the Onset of Convection in a Nanofluid

被引：97

作者：

Nield, D. A. ^{[1
]}

Kuznetsov, A. V. ^{[2
]}

机构：

[1] Univ Auckland, Dept Engn Sci, Auckland 1142, New Zealand

[2] N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA

来源：

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 2010年 / 132卷 / 05期

关键词：

Brownian motion; convection; nanofluidics; two-phase flow; HEAT-TRANSFER; INSTABILITY;

D O I：

10.1115/1.4000474

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The onset of convection in a horizontal layer of a nanofluid is studied analytically. The model used for the nanofluid incorporates the effects of Brownian motion and thermophoresis, and allows for local thermal nonequilibrium (LTNE) between the particle and fluid phases. The analysis reveals that in some circumstances, the effect of LTNE can be significant, but for a typical dilute nanofluid (with large Lewis number and with small particle-to-fluid heat capacity ratio), the effect is small.

引用

页码：1 / 7

页数：7

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