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Your search keyword '"Tag El Din, El Sayed M."' showing total 2 results
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2 results on '"Tag El Din, El Sayed M."'

1. Analysis of pure nanofluid (GO/engine oil) and hybrid nanofluid (GO–Fe3O4/engine oil): Novel thermal and magnetic features

Author

Ahmad, Sohail, Ali, Kashif, Ashraf, Muhammad, Khalifa, Hamiden Abd El-Wahed, Aziz ElSeabee, Fayza Abdel, and Tag El Din, El Sayed M.

Abstract

Hybrid nanofluids can provide better physical strength, thermal conductivity, and mechanical resistance in many thermodynamic systems than pure nanofluids. To establish the novel results, using superior types of hybrid nanoparticles like graphene oxide (GO) and iron oxide (Fe3O4) is the main focus of recent work. This study investigates the innovative thermal and magnetic features of both pure nanofluid GO/engine oil (EO) and hybrid nanofluid GO–Fe3O4/EO under the simultaneous effects of induced as well as applied magnetic field. The chemical reaction phenomenon together with activation energy has also been taken into account. A novel algorithm based on order reduction and finite difference discretization is developed in order to numerically treat the problem. The efficiency of the code is appraised by a numerical comparison which is found to be in a good correlation with the existing results. From the consequences of this study, it is deduced that the reduction in induced magnetic field and fluid’s velocity (in case of either pure or hybrid nanofluid) is associated with the enlarging values of magnetic Prandtl number and induced magnetic field parameter. Further, activation energy is responsible for enhancement in concentration. The hybrid nano-composition of GO–Fe3O4/EO can provide the thermal stability, prevent the corrosion and make the liquid to stay in high temperature.

Published
2022
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2. An optimized stability framework for three-dimensional Hartman flow via Chebyshev collocation simulations.

Author

Alfwzan, Wafa F., Hussain, Zakir, Al-Khaled, Kamel, Riaz, Arshad, Abdelhamid, Talaat, Khan, Sami Ullah, Javid, Khurram, Tag El-Din, El Sayed M., and Chammam, Wathek

Abstract

Hydrodynamics instability is studied for an electrical conducting fluid against small disturbance between the channels by using normal magnetized force. Chebyshev collocation technique is used to determine the stability of three-dimensional Hartmann flow problem. The distinctive case of the perturbations is calculated. It is also considered that perturbations intensity be determined by just on quantified by different parameters. We have considered one of the flow stabilities conditions to analyze our problem. QZ (Qualitat and Zuverlassigkeit) technique is applied to investigate the problem to draw stability curves. α c , β c are critical wave numbers in streamwise and span-wise respectively and for a big range of Hartmann value (Ha) , we obtained critical Reynolds number (Re c). It is found that Couette flow is destabilized for a specific value of Magnetize force while with greater or lesser magnitude than the particular one will stabilize the flow. Disturbances with particular oblique angle θ will grow while the others will decay for the three-dimensional disturbance. We observed from over results that for Ha(> 2.0) Re c , increases steadily and when Ha more than 3.886, Re c decreases fast to the minimum. It is also established that for drop down from Ha = 3.886 and Re c becomes very large. For distinct Hartmann values, there exist two Re c numbers due to closed contour. The outcomes of current study are utilized in drug-delivery systems and photodynamic therapy. [ABSTRACT FROM AUTHOR]

Published
2023
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