Magnetic Rotating Flow of a Hybrid Nano-Materials Ag-MoS 2 and Go-MoS 2 in C 2 H 6 O 2 -H 2 O Hybrid Base Fluid over an Extending Surface Involving Activation Energy: FE Simulation

Bagh Ali, Rizwan Ali Naqvi, Dildar Hussain, Omar M. Aldossary and Sajjad Hussain
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Bagh Ali: Department of Applied Mathematics, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
Rizwan Ali Naqvi: Department of Intelligent Mechatronics, Sejong University, Seoul 100083, Korea
Dildar Hussain: Korea Institute for Advanced Study(KIAS), School of Computational Sciences, 85 Hoegiro Dongdaemun-gu, Seoul 02455, Korea
Omar M. Aldossary: Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
Sajjad Hussain: School of Aerospace and Mechanical Engineering, Nanyang Technological University, Singapore 639798, Singapore

Mathematics, 2020, vol. 8, issue 10, 1-22

Abstract: Numeric simulations are performed for a comparative study of magnetohydrodynamic (MHD) rotational flow of hybrid nanofluids (MoS 2 -Ag/ethyleneglycol-water (50–50%) and MoS 2 -Go/ethyleneglycol-water (50–50%)) over a horizontally elongated plane sheet. The principal objective is concerned with the enhancement of thermal transportation. The three-dimensional formulation governing the conservation of mass, momentum, energy, and concentration is transmuted into two-dimensional partial differentiation by employing similarity transforms. The resulting set of equations (PDEs) is then solved by variational finite element procedure coded in Matlab script. An intensive computational run is carried out for suitable ranges of the particular quantities of influence. The primary velocity component decreases monotonically and the magnitude of secondary velocity component diminishes significantly when magnetic parameter, rotational parameter, and unsteadiness parameter are incremented. Both the primary and secondary velocities are smaller in values for the hybrid phase Ag-MoS 2 than that of hybrid phase Go-MoS 2 but the nanoparticle concentration and temperature are higher for hybrid phase Ag-MoS 2 . The increased values of parameters for thermophoresis, Brownian motion, shape factor, and volume fraction of ? 2 made significant improvement in the temperature of the two phases of nano liquids. Results are also computed for the coefficients of skin friction(x, y-directions), Nusselt number, and Sherwood number. The present findings manifest reasonable comparison to their existing counterparts. Some of the practical engineering applications of the present analysis may be found in high-temperature nanomaterial processing technology, crystal growing, extrusion processes, manufacturing and rolling of polymer sheets, academic research, lubrication processes, and polymer industry.

Keywords: magnetohydrodynamic; hybrid nanofluid; finite element method; shape factor; rotating frame (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2020
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