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A.C. Baytas

Bio: A.C. Baytas is an academic researcher from Istanbul Technical University. The author has contributed to research in topics: Natural convection & Heat transfer. The author has an hindex of 11, co-authored 17 publications receiving 920 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the issue of entropy generation in a tilted saturated porous cavity for laminar natural convection heat transfer is analyzed by solving numerically the mass, momentum and energy balance equations, using Darcy's law and Boussinesq-incompressible approximation.

253 citations

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TL;DR: In this article, the steady-state free convection within an inclined cavity filled with a fluid-saturated porous medium is studied, where the inclined walls are maintained at constant but different temperatures, while the horizontal walls are adiabatic.

227 citations

Journal ArticleDOI
TL;DR: In this paper, the steady state natural convection in a square porous enclosure using a thermal non-equilibrium model for the heat transfer between the fluid and the solid phases is studied.
Abstract: The aim of the present paper is to study the steady state natural convection in a square porous enclosure using a thermal non-equilibrium model for the heat transfer between the fluid and the solid phases. The analysis assumes that the porous medium is homogeneous and isotropic. The present study also assumes the non-Darcy model of natural convection in porous media. It is assumed that the heat generation is only in solid phase. Two dimensional steady convection in a cavity bounded by isothermal walls at constant temperatures has been studied numerically by adopting a two-temperature model of microscopic heat transfer. Such a model. which allows the fluid and solid phases not to be in local thermal equilibrium, is found to modify the flow behaviour and heat transfer rates. Knowledge of this behaviour is very important for the design of the many engineering applications.

99 citations

Journal ArticleDOI
TL;DR: In this paper, the authors have analyzed Laminar natural convection flow in a square enclosure having thick conducting walls, where the walls are considered to have finite conductive properties.

96 citations

Journal ArticleDOI
TL;DR: In this article, a numerical study of the steady natural convection heat transfer within an inclined trapezoidal enclosure filled with a fluid-saturated porous medium is presented, where the top cylindrical surface of the enclosure is cooled and the bottom cylinder is heated.

92 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors considered various shapes of nanoparticles and found that platelet shape has the highest rate of heat transfer and Nusselt number enhances with increase of nanofluid volume fraction, Darcy, and Reynolds number while it reduces with an increase of Lorentz forces.

296 citations

Journal ArticleDOI
TL;DR: In this paper, the issue of entropy generation in a tilted saturated porous cavity for laminar natural convection heat transfer is analyzed by solving numerically the mass, momentum and energy balance equations, using Darcy's law and Boussinesq-incompressible approximation.

253 citations

Journal ArticleDOI
TL;DR: In this paper, the second law analysis of thermodynamics in enclosures due to buoyancy-induced flow for energy systems is reviewed and the authors define entropy generation minimization or thermodynamic optimization.
Abstract: This paper reviews the second law analysis of thermodynamics in enclosures due to buoyancy-induced flow for energy systems It defines entropy generation minimization or thermodynamic optimization In addition, the article summarizes the recent works on entropy generation in buoyancy-induced flows in cavity and channels Studies on mixed convection were also included in the study Presentation was performed for flow in porous media and viscous fluid filled media at different shaped enclosures and duct under buoyancy-induced force

252 citations

Journal ArticleDOI
TL;DR: In this paper, a two-dimensional steady free convection in a square cavity bounded by isothermal vertical walls at different temperatures and adiabatic horizontal walls has been studied numerically by adopting a twotemperature model of heat transfer.

217 citations

Journal ArticleDOI
TL;DR: In this paper, the entropy generation due to heat transfer and friction has been determined in transient state for laminar natural convection by solving numerically the mass, momentum and energy balance equations, using a control volume finite-element method.

200 citations