Magnetohydrodynamic natural convection and entropy generation analyses inside a nanofluid-filled incinerator-shaped porous cavity with wavy heater block

The aim of the current study is natural convection analysis conjugated with entropy generation analysis in an incinerator shaped permeable enclosure loaded with Al 2 O 3 –H 2 O nanofluid subjected to the magnetic field with a rectangular wavy heater block positioned on the bottom of the cavity wall....

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2020-09, Vol.141 (5), p.2033-2045
Main Authors: Hashemi-Tilehnoee, M., Dogonchi, A. S., Seyyedi, Seyyed Masoud, Chamkha, Ali J., Ganji, D. D.
Format: Article
Language:English
Subjects:
Aluminum oxide
Analysis
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Computational fluid dynamics
Darcy number
Entropy
Finite volume method
Fluid flow
Free convection
Hartmann number
Incinerators
Inorganic Chemistry
K-epsilon turbulence model
Magnetic fields
Magnetic permeability
Magnetism
Magnetohydrodynamic turbulence
Magnetohydrodynamics
Measurement Science and Instrumentation
Nanofluids
Nanoparticles
Nusselt number
Physical Chemistry
Polymer Sciences
Rayleigh number
Turbulence
Turbulence models
Turbulent flow
Viscosity
Vorticity
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Summary:The aim of the current study is natural convection analysis conjugated with entropy generation analysis in an incinerator shaped permeable enclosure loaded with Al 2 O 3 –H 2 O nanofluid subjected to the magnetic field with a rectangular wavy heater block positioned on the bottom of the cavity wall. The bottom and top horizontal walls are adiabatic; the inclined and vertical walls are thought to be cooled. Firstly, the governing expressions and standard k – ε turbulence model are rewritten from dimensional form to non-dimensional form using dimensionless parameters such as vorticity and stream function. In the next step, the equation of entropy generation is written in dimensionless form. Then, the system of non-dimensional governing equations is solved by the finite volume method (FVM) conjugated with a non-dimensionalization scheme using ANSYS Fluent. Fine grids (wall y + 
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-019-09220-6