Ghani, Siti Nur Ainsyah and Ul-Haq, Rizwan and Noor, Noor Fadiya Mohd (2023) Engine oil enhanced performance with hybrid graphene-SWCNT nanomaterials over a Riga curvy surface. Case Studies in Thermal Engineering, 45. ISSN 2214-157X, DOI https://doi.org/10.1016/j.csite.2023.102902.
Full text not available from this repository.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.
| Item Type: | Article |
|---|---|
| Funders: | Fundamental Research Grant Scheme (FRGS) of Ministry of Higher Education, Malaysia [FRGS/1/2020/STG06/UM/02/1, FP009-2020] |
| Uncontrolled Keywords: | Engine oil; Hybrid nanofluid; Graphene-SWCNTs; Nanoparticle shape factor; Riga channel |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Institute of Mathematical Sciences |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 12 Jun 2024 03:22 |
| Last Modified: | 12 Jun 2024 03:22 |
| URI: | http://eprints.um.edu.my/id/eprint/38422 |
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