1998 Baccalauréat série : science et vie, Mascara
2003 Diplôme d’ingénieur d’état en génie mécanique, Construction Mécanique
Thème : Approche thermique d’un disque de frein d’un véhicule par la méthode MEF et la méthode MDF.
2008 Diplôme de Magistère en génie mécanique, Modélisation expérimentale et numérique en thermo-fluide, Université de Mostaganem.
2018 Doctorat en Science ENERGITIQUE en génie mécanique, Université de Mostaganem.
2019 Habilitation universitaire en génie mécanique, Université de Mascara
Publications
Numerical Study of Combined Surface Radiation and Natural Convection in Vertical Conical Annular Enclosure
La revue : Defect and Diffusion Forum
Domaine : heat and mass transfer
Mots Clés : Natural Convection; Surface Radiation; Finite Volume Method; Coaxial Conical Cavity
Auteur : Mohamed A MEDEBBER1, Belkacem OULD SAID2, Noureddine Retiel
Issn : 1662-9507 Eissn : vol : 408, Num : , pp : pp 19-32
Date de publication : 2021-04-06
Résume : The present study investigates the combined free convection and surface radiation in a
conical annular cylinder filled with air (Pr=0.71). The steady-state continuity, Navier–Stokes and
energy equations were carried out by the finite volume method, and the Discrete Ordinates Method
(DOM) was used to solve the radiative heat transfer equation (RTE). The boundary conditions are
such that the inner and the outer radius of cone are maintained at hot (Th) and cold (Tc) isothermal
temperature. The horizontal upper and lower walls are assumed to be isolated. Concerning the
radiation exchange, we consider that the fluid (air) is transparent, so only the solid surfaces
contribute to the radiation exchange and assumed to be diffuse-gray. The computations are
performed for Rayleigh number (Ra) in the range 103≤Ra≤106, the surface emissivity (ε) 0≤ε≤1 and
the cone angle (????????) 63º, 76º, 80º and 84º. The key parameters for this analysis are considered as
Rayleigh number (Ra), surface emissivity (ε) and the cone angle (????????). Results are presented in terms
of isotherms, streamlines and the average Nusselt numbers.
La revue : R E C U E I L D E M É C A N I Q U E
Domaine : transfer de chaleur et masse
Mots Clés : heat transfer and mass
Auteur : Mohamed Amine MEDEBBER, Noureddine RETIEL, Belkacem OULD SAID
Issn : Eissn : vol : 05, Num : 01, pp : 4 3 0 – 4 3 9
Date de publication : 2020-10-20
Résume : This study concerns the two-dimensional numerical simulation of the double diffusive
convection in cylindrical vertical annular cavity. The vertical walls are maintained at
different uniform temperatures and concentration. The governing equations are solved
numerically using the finite volume method. The coupling between the continuity and
momentum equations is effected using the SIMPLER algorithm. Numerical analysis has
been carried out for a wide range of the buoyancy ratio (N=0.8 and 1.3). The influence
of the buoyancy ratio (N) parameters on the streamlines, isotherms, isoconcentration,
average Nusselt number and Sherwood numbers has been numerically investigated in
detail.
La revue : MATEC Web of Conferences
Domaine : energy
Mots Clés : Computational fluid mechanics; Coupled Natural convection with Surface radiation; Finite Volume Method; Partially Annular; Nusselt Number
Auteur : Mohamed Amine Medebber, Nourddine Retiel, belkacem Ould said, Abderrahmane Aissa, and Mohammed El Ganaoui
Issn : Eissn : 2261-236X vol : 307, Num : 01029 (2020), pp :
Date de publication : 2020-02-10
Résume : A transient two dimensional study of free convection in a vertical cylinder partially annulus is conducted numerically. Uniform temperature is imposed cross a vertical wall, while the top and bottom walls are adiabatic. The governing equations are solved numerically by using a finite volume method. The coupling between the continuity and momentum equations is effected using the SIMPLER algorithm. Solutions have been obtained for Prandtl numbers equal to 7.0, Rayleigh numbers of 103 to 106 and height ratios 0.5. The influence of physical and geometrical parameters on the isotherms, velocity fields, average Nusselt has been numerically investigated.
Numerical Study of Double Diffusive Convection within the Annular Region of Two Concentric Vertical Cylinders
La revue : Defect and Diffusion Forum
Domaine : heat and mass transfer
Mots Clés : Double-diffusive convection, the finite volume method, partially annular, the Nusselt number, the Sherwood numbers
Auteur : Mohamed A. MEDEBBER, Noureddine RETIEL
Issn : 1662-9507 Eissn : vol : 374, Num : , pp : 1-17
Date de publication : 2017-04-21
Résume : This article reports a numerical study of double-diffusive convection within the annular
region of two concentric vertical cylinders. The outer vertical wall is maintained at lower uniform
temperature and concentration, while the inner vertical wall is maintained at higher uniform
temperature and concentration. The top and bottom horizontal walls are adiabatic and impermeable
to mass transfer. The resulting governing equations are solved using a finite volume method. The
coupling between the continuity and momentum equations is solved using the SIMPLER algorithm.
The compilations have been obtained for Prandtl numbers (Pr) equal to 7.0, and Lewis number (Le)
equal to 100. The thermal Rayleigh number (RaT) and height ratio (X) are, respectively, varied in
the range 103≤RaT≤106 and 0.0≤X≤1.0. The influence of physical and geometrical parameters on
the streamlines, isotherms, isoconcentrations, average Nusselt and Sherwood numbers has been
numerically investigated in detail
Numerical Study of Natural Convection in a Vertical Cylindrical Partially Annular
La revue : Mechanics and Mechanical Engineering
Domaine : heat and mass transfer
Mots Clés : natural convection, Finite Volume Method, partially annular, Nusselt number
Auteur : Mohamed A. MEDEBBER, Noureddine RETIEL
Issn : 1428-1511 Eissn : 2354-0192 vol : 22, Num : 1, pp : 71–86
Date de publication : 2017-09-27
Résume : A study of free convection in a vertical cylinder partially annulus is conducted numerically.
Uniform temperature is imposed cross a vertical wall, while the top and bottom
walls are adiabatic. The governing equations are solved numerically by using a finite volume
method. The coupling between the continuity and momentum equations is effected
using the SIMPLER algorithm. Solutions have been obtained for Prandtl numbers equal
to 7.0, Rayleigh numbers of 103 to 106 and height ratios of 0 to 1. The influence of
physical and geometrical parameters on the streamlines, isotherms, average Nusselt has
been numerically investigated.
Effect of Surface Radiation on free Convection in Vertical Cylinders Partially Annular
La revue : Defect and Diffusion Forum
Domaine : heat and mass transfer
Mots Clés : Free convection; Surface radiation; Finite Volume Method; Coordinate cylinder, Radiative Transfer Equation (RTE), Discrete Ordinates Method (DOM), Partially Annular caviy; Average Nusselt Number.
Auteur : Mohamed A. MEDEBBER, Belkacem OULD SAID, Noureddine RETIEL
Issn : 1662-9507 Eissn : vol : 389, Num : , pp : 36-49
Date de publication : 2018-11-15
Résume : Two dimensional combined free convection and thermal radiation in an annular region of
two concentric vertical cylinders filled with air (Pr=0.71) has been numerically investigated. The
steady-state continuity, Navier–Stokes and energy equations were carried out by the finite volume
method, and the Discrete Ordinates Method (DOM) was used to solve the radiative heat transfer
equation (RTE). The flow is considered to be laminar and the properties of air are assumed to be
constant except for the density variation for which the Boussinesq approximation is used.
Concerning the radiation exchange, we consider that the fluid (air) is transparent, so only the solid
surfaces contribute to the radiation exchange and assumed to be diffuse-gray. The computations are
performed for Rayleigh number (Ra) in the range 103≤Ra≤106 and for the surface emissivity (ε)
0≤ε≤1 while the radii ratio of the curvature (K) is kept equal to 2. The key parameters for this
analysis are considered as Rayleigh number (Ra), surface emissivity (ε). Results are reported in
terms of isotherms, streamlines and total average Nusselt numbers. The results showed that the
mean total Nusselt number increases monotonically with increasing Ra number and the surface
emissivity.
Numerical Study of Natural Convection in Vertical Cylindrical Annular Enclosure Filled with Cu-Water Nanofluid under Magnetic Fields
La revue : Defect and Diffusion Forum
Domaine : heat and mass transfer
Mots Clés : Computational fluid mechanics; Natural Convection; Nanofluid; Magnetic Field; Finite Volume Method; Cylindrical coordinate, Partially Annular; Average Nusselt Number.
Auteur : Mohamed A MEDEBBER, Abderrahmane AISSA, Mohamed El Amine SLIMANI and Noureddine Retiel
Issn : 1662-9507 Eissn : vol : 392, Num : , pp : 123-137
Date de publication : 2019-04-08
Résume : The two dimensional study of natural convection in vertical cylindrical annular enclosure
filled with Cu-water nanofluid under magnetic fields is numerically analyzed. The vertical walls are
maintained at different uniform hot and cold temperatures, TH and TC, respectively. The top and
bottom walls of the enclosure are thermally insulated. The governing equations are solved
numerically by using a finite volume method. The coupling between the continuity and momentum
equations is effected using the SIMPLER algorithm. Numerical analysis has been carried out for a
wide range of Rayleigh number (103 ≤Ra≤106), Hartmann number (1 ≤Ha≤100) and nanoparticles
volume fraction (0 ≤ϕ≤0.08). The influence of theses physical parameters on the streamlines,
isotherms and average Nusselt has been numerically investigated.
