Engine oil enhanced performance with hybrid graphene-SWCNT nanomaterials over a Riga curvy surface
Document Type
Article
Publication Date
5-1-2023
Abstract
Hybrid graphene nanomaterials and single-wall carbon nanotubes (SWCNTs) saturated in a steady laminar viscous incompressible engine oil over a permeable and stretchable curvy Riga surface are focussed in the present study. The effects of nanoparticle shape factor, nanoparticle volume fraction and thermal radiation towards the non-Newtonian flow are considered. The proposed partial differential governing equations are initially transformed into non-linear ODEs aided with similarity expressions. Subsequently, the numerical MATLAB's bvp4c package is uti-lized to solve the equations. Then, the parameters' influences on dimensionless velocity and temperature distributions, reduced skin friction coefficient and reduced Nusselt number are presented tabularly and graphically. Hybrid graphene-SWCNTs/engine oil has the least velocity, yet the greatest temperature profile when phi 1 = 0.04 and phi 2 = 0.02 are considered. It is also observed that the heat transfer performance enhances as the values of nanoparticle shape factor and thermal radiation increase. The lamina-shape nanomaterials are highly recommended to elevate the heat transfer performance of hybrid graphene-SWCNTs/engine oil for realistic ap-plications. The present hybrid nanofluid flow with consideration of thermal radiation and nanoparticle shape factor allows enhancement in the heat and mass transfer for various engi-neering, technological and industrial operations especially in the design of submarines, thermal reactors and micro-coolers.
Keywords
Engine oil, Hybrid nanofluid, Graphene-SWCNTs, Nanoparticle shape factor, Riga channel
Divisions
MathematicalSciences
Funders
Fundamental Research Grant Scheme (FRGS) of Ministry of Higher Education, Malaysia [FRGS/1/2020/STG06/UM/02/1, FP009-2020]
Publication Title
Case Studies in Thermal Engineering
Volume
45
Publisher
Elsevier
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS