Numerical analysis of thermal hydraulic performance of Al2O3-H2O nanofluid flowing through a protrusion obstacles square mini channel

被引：25

作者：

Kumar, Sunil ^{[1
,2
]}

Kothiyal, Alok Darshan ^{[3
]}

Bisht, Mangal Singh ^{[4
]}

Kumar, Anil ^{[1
]}

机构：

[1] Shoolini Univ, Sch Mech & Civil Engn, Solan, HP, India

[2] Uttarakhand Tech Univ, Dehra Dun, India

[3] Baba Farid Inst & Technol Dehradun, Uttarakhand, India

[4] Govind Ballabh Pant Engn Coll Pauri Garhwal, Uttarakhand, India

来源：

CASE STUDIES IN THERMAL ENGINEERING | 2017年 / 9卷

关键词：

Energy; Stream wise spacing; Span wise spacing; Nanofluids; Flow channel; MICROCHANNEL HEAT SINK; SOLAR AIR CHANNEL; MULTI V-RIB; TRANSFER ENHANCEMENT; AQUEOUS SUSPENSIONS; FORCED-CONVECTION; LAMINAR-FLOW; FLUID-FLOW; CONDUCTIVITY; NANOPARTICLES;

D O I：

10.1016/j.csite.2017.01.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this study, numerical investigation has been carried out for a range of system and operating parameters in order to analyze the effect of protrusion obstacles on heat and fluid flow characteristics of nanopartical Al2O3 with concentration 4.0% and diameter 30 nm in square mini channel. The square mini channel has, stream wise spacing (X-s/d(p)) range of 1.4-2.6, span wise spacing (Y-s/d(p)) range of 1.4-2.6, ratio of protrusion height to print diameter (e(p)/d(p)) of 1.67 and Reynolds number (R-en) ranges from 4000 to 18,000. Simulations were carried out to obtain heat and fluid flow behaviour of smooth and rough tube, using commercial CFD software, ANSYS 16.0 (Fluent). Renormalization k - epsilon model was employed to assess the influence of protrusion on turbulent flow and velocity field. Simulation results show that, the enhancement of 3.73 times in heat transfer and 4.25 times enhancement in pressure drop as a function of X-s/d(p) and Y-s/d(p) of 1.8 respectively.

引用

页码：108 / 121

页数：14

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