PAGE PERSONNELLE



Dr. MEDEBBER Mohamed Amine مدبر محمد امين
Faculté des Sciences et de la Technologie
Département Génie mecanique
Grade : Maitre de conférence classe A
Numéro de Téléphone :0790702801
Adresse électronique institutionnel :m.medebber@univ-mascara.dz
Adresse électronique personnel :amine_mg@yahoo.fr
Adresse postale :
03 Rue Bouktab Mohamed, Mascara
Mots Clés de Recherche : transfert de chaleur et de masse, mécanique de fluide, La Méthode des Volumes Finis, Les Coordonnées Cylindriques


Ouvrages Publications Projets Communications


Biographie

Parcours académique :

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.

  • Étude numérique du couplage de la convection libre avec le transfert de masse dans une cavité cylindrique verticale annulaire
  • 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.

  • Transient Numerical Analysis of Free Convection in Cylindrical Enclosure
  • 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.





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