Experimental study of turbulent forced convection of nanofluid in channels with cylindrical and spherical hollows

被引：15
|
作者：
Minakov, A. V. [1 ,2 ,3 ]
Guzei, D. V. [1 ,2 ]
Meshkov, K. N. [1 ]
Popov, I. A. [3 ]
Shchelchkov, A. V. [3 ]
机构：
[1] Siberian Fed Univ, Krasnoyarsk, Russia
[2] SB RAS, Kutateladze Inst Thermophys, Novosibirsk, Russia
[3] Kazan Natl Res Tech Univ, KNRTU KAI, Kazan, Russia
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2017年 / 115卷
关键词：
Nanofluids; Turbulent heat transfer; Forced convection; Thermal conductivity; Viscosity; Pressure drop; Nanoparticle size; Channels with wall heat transfer enhancers; HEAT-TRANSFER ENHANCEMENT; THERMAL-CONDUCTIVITY; PRESSURE-DROP; LAMINAR; TUBES; FLOW;
D O I：
10.1016/j.ijheatmasstransfer.2017.07.117
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Experimental study of forced turbulent convection of water-based nanofluids with nanoparticles of zirconium oxide (ZrO2) was carried out in smooth tubes and channels with wall heat transfer enhancers. Nanopowders with average particle size of 44 and 105 nm were used in the experiments. The Reynolds number ranged from 3000 to 8000. It is revealed that the increments in the heat transfer coefficient and the pressure drop when using nanofluids depend on the surface shape of the channel. It is shown that nanofluids allow reaching thermal-hydraulic efficiency comparable to that of the channels with artificial heat transfer enhancers. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：915 / 925
页数：11
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