Effect of thermal radiation on engine oil nanofluid flow over a permeable wedge under convective heating

Abstract

Purpose The purpose of this paper is to examine the magneto hydrodynamic flow and heat transfer of nanofluids over a permeable wedge based on engine oil which is under the effects of thermal radiation and convective heating. Design/methodology/approach The equations governing the flow are transformed into differential equations by applying similarity transformations. Keller box method is used to bring out the numerical solution. Findings The discovery interprets that temperature as well as the velocity of Ag-engine oil nanofluids are more noticeable than Cu-engine oil nanofluids. Thermal boundary layer increases for radiation parameter as well as Biot number. Fluctuations of co-efficient of drag skin friction as well heat transfer rate at the wall are also tested. Originality/value Till now, no numerical studies are reported on the heat transfer enhancement of the permeable wedge under thermal radiation on engine oil nanofluid flow by considering convective heating.

Radiation Effects on Inclined Magnetohydrodynamics Mixed Convection Boundary Layer Flow of Hybrid Nanofluids over a Moving and Static Wedge

“…Graphs are used to show the velocity and temperature profiles of the hybrid nanofluids that are affected by the parameters, while tables are used to show the skin friction and Nusselt number that are impacted by the parameters. Table 2 shows the direct comparison in the term of skin friction coefficient that obtained in the present study with the numerical results reported by Watanabe [47], Khan et al, [33], Yih [48], Mabood et al, [49] and Kotha et al, [41] to validate the validity and accuracy of the current analysis. The reported findings are in food accordance with reported in previous study.…”

“…The base fluid is considered to be water with hybrid nanoparticles of silver (Ag) and magnesium oxide (MgO) that are in thermal equilibrium. Assuming a two-dimensional and steady flow in the laminar boundary layer, the governing equations are given as follows [41]:…”

“…This type of flow has not yet been examined, to the best of the author's knowledge. The goal of this research is to expand the studies of Kotha et al, [41] to the case of hybrid nanofluids, taking into account the effects of mixed convection and constant wall temperature. This is due to the fact that constant wall temperature and convective boundary condition are related to each other.…”

Mixed convective flow of heat and mass transfer of nanofluids over a static wedge with convective boundary conditions

“…Gangadhar et al [19] examined the insecure progression of free convective boundary layers of nanofluids on extended surfaces. Gangadhar et al [20] considered the impact of warm radiation on the progression of nanofluids from oil through penetrable wedges.…”

Entropy generation analysis of nanoliquid flow through microchannel considering heat source and different shapes of nanoparticle

“…Dogonchi et al (2018aDogonchi et al ( , 2018b investigated the free convection of copper nanoparticle through a triangular cavity. Magnetohydrodynamic flow over a wedge has been examined by Kotha et al (2019). They obtained that temperature is greater in case of Ag-engine oil than Cu-engine oil nanoliquid.…”