Results 1 to 10 of about 11,295 (181)
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 ...
Awad Mohamed M.
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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.
Awad Mohamed M.
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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
europepmc +6 more sources
Partial Differential Equations in Applied MathematicsMicroscopic particles have incredible thermal conductivity making them essential in nanotechnology, electronics, materials science and heat exchangers. For suitable optimization of thermic engineering structure, thermal transportation has to increased but minimized the entropy generation.
Humaira Sharif +3 more
doaj +5 more sources
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
europepmc +3 more sources
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? Is it possible to solve and manage fluid dynamics problems by mean of second law of thermodynamics?
Michele TRANCOSSI, Jose PASCOA
openaire +3 more sources
Unsteady MHD non-Newtonian (rheological) heat transfer nanofluids with entropy generation analysis [PDF]
Nonlinear Engineering, 2019 A theoretical study of unsteady magnetohydrodynamic boundary layer stagnation point flow, heat and mass transfer of a second grade electrically-conducting nanofluid from a horizontal stretching sheet with thermal slip and second order slip velocity ...
Beg, OA, Rana, P, Shukla, N
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Case Studies in Thermal Engineering, 2022 The present study discloses entropy analysis in flow of hybrid nanofluid under the influences of magnetohydrodynamics, variable viscosity and mixed convection.
Zakir Hussain +3 more
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Entropy generation of MHD flow of sodium alginate (C6H9NAO7) fluid in thermal engineering
Scientific Reports, 2022 In this paper, impacts of magnetic field and porosity on the entropy generation of sodium-alginate (C6H9NaO7) fluid are studied. C6H9NaO7 is taken over a moving and heated vertical wall. Heat transfer is due to free convection.
T. N. Abdelhameed
doaj +1 more source
Entropy generation of nanofluid flow in hexagonal microchannel
Journal of Taibah University for Science, 2022 A new model for entropy generation number in hexagonal microchannel is developed going from the equation proposed by Bejan. The effect of Cu, CuO, Al2O3 and TiO2 mixed with pure water inside the microchannel is evaluated via entropy generation analysis ...
Mohamed Omri +3 more
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