Next Article in Journal
On Nonlinear Reaction-Diffusion Model with Time Delay on Hexagonal Lattice
Next Article in Special Issue
Modified MHD Radiative Mixed Convective Nanofluid Flow Model with Consideration of the Impact of Freezing Temperature and Molecular Diameter
Previous Article in Journal
Development of a Novel Freight Railcar Load Planning and Monitoring System
Previous Article in Special Issue
Numerical Solution of Non-Newtonian Fluid Flow Due to Rotatory Rigid Disk
Article

Heat Transfer of Oil/MWCNT Nanofluid Jet Injection Inside a Rectangular Microchannel

1
Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
2
Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran
3
Centre for Energy Technology, School of Mechanical Engineering, The University of Adelaide, South Australia, Australia
4
Department of Mathematics, University of Education Lahore, Faisalabad Campus, Faisalabad, Pakistan
5
Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
6
Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
*
Author to whom correspondence should be addressed.
Symmetry 2019, 11(6), 757; https://doi.org/10.3390/sym11060757
Received: 20 March 2019 / Revised: 23 May 2019 / Accepted: 27 May 2019 / Published: 4 June 2019
(This article belongs to the Special Issue Symmetry and Fluid Mechanics)
In the current study, laminar heat transfer and direct fluid jet injection of oil/MWCNT nanofluid were numerically investigated with a finite volume method. Both slip and no-slip boundary conditions on solid walls were used. The objective of this study was to increase the cooling performance of heated walls inside a rectangular microchannel. Reynolds numbers ranged from 10 to 50; slip coefficients were 0.0, 0.04, and 0.08; and nanoparticle volume fractions were 0–4%. The results showed that using techniques for improving heat transfer, such as fluid jet injection with low temperature and adding nanoparticles to the base fluid, allowed for good results to be obtained. By increasing jet injection, areas with eliminated boundary layers along the fluid direction spread in the domain. Dispersing solid nanoparticles in the base fluid with higher volume fractions resulted in better temperature distribution and Nusselt number. By increasing the nanoparticle volume fraction, the temperature of the heated surface penetrated to the flow centerline and the fluid temperature increased. Jet injection with higher velocity, due to its higher fluid momentum, resulted in higher Nusselt number and affected lateral areas. Fluid velocity was higher in jet areas, which diminished the effect of the boundary layer. View Full-Text
Keywords: Oil/MWCNT nanofluid; heat transfer; finite volume method; laminar flow; slip coefficient; microchannel Oil/MWCNT nanofluid; heat transfer; finite volume method; laminar flow; slip coefficient; microchannel
Show Figures

Figure 1

MDPI and ACS Style

Jalali, E.; Ali Akbari, O.; Sarafraz, M.M.; Abbas, T.; Safaei, M.R. Heat Transfer of Oil/MWCNT Nanofluid Jet Injection Inside a Rectangular Microchannel. Symmetry 2019, 11, 757. https://doi.org/10.3390/sym11060757

AMA Style

Jalali E, Ali Akbari O, Sarafraz MM, Abbas T, Safaei MR. Heat Transfer of Oil/MWCNT Nanofluid Jet Injection Inside a Rectangular Microchannel. Symmetry. 2019; 11(6):757. https://doi.org/10.3390/sym11060757

Chicago/Turabian Style

Jalali, Esmaeil, Omid Ali Akbari, M. M. Sarafraz, Tehseen Abbas, and Mohammad R. Safaei 2019. "Heat Transfer of Oil/MWCNT Nanofluid Jet Injection Inside a Rectangular Microchannel" Symmetry 11, no. 6: 757. https://doi.org/10.3390/sym11060757

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop