Free convection in a porous horizontal cylindrical annulus with a nanofluid using Buongiorno's model

被引：56
|
作者：
Sheremet, Mikhail A. [1 ,2 ]
Pop, Ioan [3 ]
机构：
[1] Tomsk State Univ, Fac Mech & Math, Dept Theoret Mech, Tomsk 634050, Russia
[2] Tomsk Polytech Univ, Inst Power Engn, Tomsk 634050, Russia
[3] Babe Bolyai Univ, Dept Appl Math, Cluj Napoca 400084, Romania
来源：
COMPUTERS & FLUIDS | 2015年 / 118卷
关键词：
Free convection; Horizontal annulus; Porous medium; Nanofluids; Buongiorno model; Numerical method; CONJUGATE NATURAL-CONVECTION; HEAT-TRANSFER; CAVITY; FLOW; LAYER; PARTICLES; TRANSIENT; STEADY;
D O I：
10.1016/j.compfluid.2015.06.022
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Natural convection flow in a porous concentric horizontal annulus saturated with a water based nanofluid is numerically investigated. The mathematical model used is of single-phase and is formulated in dimensionless stream function and temperature taking into account the Darcy-Boussinesq approximation and the nanofluid model proposed by Buongiomo. The transformed dimensionless partial differential equations have been solved using a second-order accurate finite-difference technique. The results indicate that inclusion of nanoparticles into pure water changes the flow structure at low values of the Rayleigh number. (C) 2015 Elsevier Ltd. All rights reserved.
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页码：182 / 190
页数：9
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