Home / Journals / FDMP / Vol.14, No.3, 2018
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  • Open Access

    ARTICLE

    Numerical Investigation of Combined Surface Radiation and Free Convection in a Square Enclosure with an Inside Finned Heater

    Hamici Nadjib1, Sahi Adel1,*, Sadaoui Djamel1, Djerrada Abderrahmane1
    FDMP-Fluid Dynamics & Materials Processing, Vol.14, No.3, pp. 155-175, 2018, DOI: 10.3970/fdmp.2018.01114
    Abstract The study goes further to investigate a two-dimensional numerical model coupling free convection and surface radiation in an air-filled cavity containing a heated thin finned plate. The square enclosure is subjected to isothermal and insulated boundary conditions while the heating element location is varied from the horizontal position (HPFU, HPFD) to the vertical position (VPFL). The dimensionless governing equations under Boussinesq approximations are coupled with a radiative model through the boundaries conditions and solved by the Finite Volume Method. The effects of the pertinent parameters, namely, Rayleigh number (103≤Ra≤106), fin length (0.125≤La≤0.875), fin position (0.25≤Ha≤0.75) and wall emissivity (0≤ε≤1) are… More >

  • Open Access

    ARTICLE

    Experimental and Theoretical Analysis of a Novel Cascade Solar Desalination Still

    M. Bouzaid1,*, O. Ansari1, M. Taha-Janan1, M. Oubrek1
    FDMP-Fluid Dynamics & Materials Processing, Vol.14, No.3, pp. 177-200, 2018, DOI: 10.3970/fdmp.2018.00330
    Abstract Ocean water is characterized by very high salinity, which generally makes it unsuitable for human or animal's needs. The production of potable water from the ocean, therefore, requires a desalination process, which is often regarded as the crucial limitation to overcome towards widespread use of ocean water as the primary source of water for human consumption. In this study, we analyze both experimentally and theoretically the thermal performances and productivity of a solar still based on a novel form of absorber plate. The related system of energy equations consists of five heat exchange relationships in the form of first differential… More >

  • Open Access

    ARTICLE

    Effect of Geometrical Parameters on Vortex Fluidic Oscillators Operating with Gases and Liquids

    T. Chekifi1,2,*, B. Dennai2, R. Khelfaoui2
    FDMP-Fluid Dynamics & Materials Processing, Vol.14, No.3, pp. 201-212, 2018, DOI: 10.3970/fdmp.2018.00322
    Abstract The fluidic oscillator is an interesting device developed for passive flow measurement. These microsystems can produce a high oscillating jet frequency with high flow velocity. The main advantages of fluidic oscillators are that no moving parts is included in the device. Commercial CFD code FLUENT was used to perform analysis of flows in fluidic oscillator. Numerical simulations were carried out for different flow conditions, where water and air were used as working fluids. The oscillation frequencies were identified by the discrete fast Fourier transform method (FFT). Furthermore a low-pressure vortex of fluid flow in the oscillating chamber was observed. The… More >

  • Open Access

    ARTICLE

    Numerical Solutions of Unsteady MHD Flow Heat Transfer Over a Stretching Surface with Suction or Injection

    G. Venkata Ramana Reddy1,*, Y. Hari Krishna1
    FDMP-Fluid Dynamics & Materials Processing, Vol.14, No.3, pp. 213-222, 2018, DOI: 10.3970/fdmp.2018.00411
    Abstract The objective of the present problem is to investigate a two-dimensional unsteady flow of a viscous incompressible electrically conducting fluid over a stretching surface taking into account a transverse magnetic field of constant strength. Applying the similarity transformation, the governing boundary layer equations of the problem converted into nonlinear ordinary differential equations and then solved numerically using fourth order Runge-Kutta method with shooting technique. The effects of various parameters on the velocity and temperature fields as well as the skin-friction coefficient and Nusselt number are presented graphically and discussed qualitatively. More >

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