Numerical Investigation of Nanofluid Laminar Forced Convective Heat Transfer inside an Equilateral Triangular Tube

2016 International Conference on Environmental Engineering and Sustainable Development

生态环境科学;经济学

Etminan, Amin^1 ; Harun, Zambri^1 ; Sharifian, Ahmad^2

Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, UKM Bangi, Selangor

43600, Malaysia^1

School of Mechanical and Electrical Engineering, University of Southern Queensland, Toowoomba

QLD

4350, Australia^2

关键词: Constant temperature;    Convective heat transfer Coefficient;    Forced convective heat transfer;    Heat transfer properties;    Hydraulic diameter;    Numerical investigations;    Steady-state flows;    Triangular channel;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/51/1/012002/pdf
DOI  :  10.1088/1742-6596/51/1/012002

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this article distilled water and CuO particles with volume fraction of 1%, 2% and 4% are studied numerically. The steady state flow regime is considered laminar with Reynolds number of 100 and nanoparticles diameters (dp) are set in the range of 20 nm and 80 nm. The hydraulic diameter and the length of equilateral triangular channel are 8 mm and 1000 mm respectively. The problem is solved using finite volume method with constant heat flux for two sides and constant temperature for one side. Convective heat transfer coefficient, Nusselt number and convective heat transfer coefficient distribution on walls are investigated in details. The fluid flow is supposed to be one phase flow. It can be observed that nanofluid leads to a remarkable enhancement on heat transfer coefficient pressure loss through the channel. The computations reveal that the size of nanoparticles has no significant influence on heat transfer properties. Besides, the study shows a good agreement between current results and experimental data in the literatures.