Entropy and Bejan Number Influence on the Liquid Film Flow of Viscoelastic Hybrid Nanofluids in a Porous Space in Terms of Heat Transfer. [PDF]
ACS Omega, 2022 The aim of this study is to determine the influence of the various parameters on the flow of thin film motion on an inclined extending surface. Maxwell fluid is used as a base fluid, and magnesium oxide (MgO) and titanium dioxide (TiO2) are used as nanocomponents.
Gul T +5 more
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Hagen number versus Bejan number [PDF]
Thermal Science, 2013 This study presents Hagen number vs. Bejan number. Although their physical meaning is not the same because the former represents the dimensionless pressure gradient while the latter represents the dimensionless pressure drop, it will be shown that Hagen number coincides with Bejan number in cases where the characteristic length (l) is equal
Mohamed Awad
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Modeling of entropy optimization for hybrid nanofluid MHD flow through a porous annulus involving variation of Bejan number. [PDF]
Sci Rep, 2020 AbstractWe numerically investigate the non-Darcy magnetohydrodynamic hybrid nanoparticle migration through a permeable tank using control volume finite element method through entropy generation. The roles of various amounts of Permeability, Lorentz and Rayleigh (Ra) number are investigated upon the various aspects of the hybrid nanofluid flow through ...
Shah Z +4 more
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A new definition of Bejan number [PDF]
Thermal Science, 2012 A new definition of Bejan number will be generated by replacing the thermal diffusivity with the mass diffusivity. For example, the Schmidt number is the mass transfer analog of the Prandtl number. For the case of Reynolds analogy (Sc = Pr = = 1), both current and new definitions of Bejan number are the same.
Mohamed M. Awad
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Modeling Fluid dynamics and Aerodynamics by Second Law and Bejan Number (Part 1 - Theory) [PDF]
INCAS Bulletin, 2019 Two fundamental questions are still open about the complex relation between fluid dynamics and thermodynamics. Is it possible (and convenient) to describe fluid dynamic in terms of second law based thermodynamic equations?
Michele TRANCOSSI, Jose PASCOA
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Partial Differential Equations in Applied MathematicsMicroscopic particles have incredible thermal conductivity making them essential in nanotechnology, electronics, materials science and heat exchangers.
Humaira Sharif +3 more
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Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field [PDF]
Processes, 2021 In this paper, focusing on the study of entropy generation (EGN), the convection flow of an eco-friendly nanofluid (N-F) in a rectangular enclosure is studied numerically. The nanoparticles (N-Ps) used are silver N-P, which are obtained in an eco-friendly manner from natural materials.
Yacine Khetib +5 more
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Entropy Generation and Bejan Number Analysis of MHD Casson Fluid Flow in a Micro-Channel with Navier Slip and Convective Boundary Conditions [PDF]
International Journal of Thermofluid Science and Technology, 2020 The analysis of MHD flow has been a concern of consideration for research scientists and engineers. In this treatise, the steady MHD flow of an incompressible and electrically conducting Casson fluid in a micro-channel with heat generation and viscous dissipation, in the presence of hydrodynamic slip and convective boundary conditions, is examined ...
M. Venkateswarlu, Puneet Bhaskar
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Extending the Bejan number to a general form
Thermal Science, 2013 A modified form of the Bejan number (Be), originally proposed by Bhattacharjee and Grosshandler for momentum processes, is obtained by replacing the dynamic viscosity (m) appearing in the original proposition with the equivalent product of the fluid density (r) and the momentum diffusivity of the fluid (n).
Mohamrd Awad, José Luis Caramés Lage
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Diffusive Bejan number and second law of thermodynamics toward a new dimensionless formulation of fluid dynamics laws [PDF]
Thermal Science, 2019 In a recent paper, Liversage and Trancossi have defined a new formulation of drag as a function of the dimensionless Bejan and Reynolds numbers. Further analysis of this hypothesis has permitted to obtain a new dimensionless formulation of the fundamental equations of fluid dynamics in their integral form.
Michele Trancossi, José Páscoa
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