51. Heat transfer intensification in hydromagnetic and radiative 3D unsteady flow regimes: A comparative theoretical investigation for aluminum and γ-aluminum oxides nanoparticles
- Author
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Imran Faisal, Umar Khan, Naveed Ahmed, Adnan, Syed Tauseef Mohyud-Din, and Syed Zulfiqar Ali Zaidi
- Subjects
Work (thermodynamics) ,Materials science ,020209 energy ,Metals and Alloys ,General Engineering ,02 engineering and technology ,Mechanics ,021001 nanoscience & nanotechnology ,Physics::Fluid Dynamics ,symbols.namesake ,Nanofluid ,Thermal radiation ,Heat transfer ,0202 electrical engineering, electronic engineering, information engineering ,Radiative transfer ,symbols ,Streamlines, streaklines, and pathlines ,Current (fluid) ,0210 nano-technology ,Lorentz force - Abstract
This article investigates the colloidal study for water and ethylene glycol based nanofluids. The effects of Lorentz forces and thermal radiation are considered. The process of non-dimensionalities of governing equations is carried out successfully by means of similarity variables. Then, the resultant nonlinear nature of flow model is treated numerically via Runge-Kutta scheme. The characteristics of various pertinent flow parameters on the velocity, temperature, streamlines and isotherms are discussed graphically. It is inspected that the Lorentz forces favors the rotational velocity and rotational parameter opposes it. Intensification in the nanofluids temperature is observed for volumetric fraction and thermal radiation parameter and dominating trend is noted for γ-aluminum nanofluid. Furthermore, for higher rotational parameter, reverse flow is investigated. To provoke the validity of the present work, comparison between current and literature results is presented which shows an excellent agreement. It is examined that rotation favors the velocity of the fluid and more radiative fluid enhances the fluid temperature. Moreover, it is inspected that upturns in volumetric fraction improves the thermal and electrical conductivities.
- Published
- 2019