Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (57)
  • Open Access

    ARTICLE

    ENTROPY GENERATION IN BOUNDARY LAYER FLOW OF A MICRO POLAR FLUID OVER A STRETCHING SHEET EMBEDDED IN A HIGHLY ABSORBING MEDIUM

    M. Y. Abdollahzadeh Jamalabadi*

    Frontiers in Heat and Mass Transfer, Vol.6, pp. 1-13, 2015, DOI:10.5098/hmt.6.7

    Abstract An analytical study of entropy generation in steady boundary layer flow, heat and mass transfer characteristic of 2D convective flow of a micro polar fluid over a stretching sheet embedded through a highly absorbing medium is performed. The governing equations are continuity, momentum boundary layer, micro rotation, and energy takes into account of Rosseland approximation for thermal radiation sources are solved analytically. The governing system of partial differential equations is first transformed into a system of non-linear ordinary differential equations using similarity transformation. The transformed equations are non-linear coupled differential equations which are then linearized More >

  • Open Access

    ARTICLE

    THE EFFECT OF MELTING ON MIXED CONVECTION HEAT AND MASS TRANSFER IN NON-NEWTONIAN NANOFLUID SATURATED IN POROUS MEDIUM

    R.R. Kairia, Ch. RamReddyb,*

    Frontiers in Heat and Mass Transfer, Vol.6, pp. 1-7, 2015, DOI:10.5098/hmt.6.6

    Abstract In this paper, we investigated the influence of melting on mixed convection heat and mass transfer from the vertical flat plate in a non-Newtonian nanofluid saturated porous medium. The wall and the ambient medium are maintained at constant, but different, levels of temperature and concentration. The Ostwald–de Waele power-law model is used to characterize the non-Newtonian nanofluid behavior. A similarity solution for the transformed governing equations is obtained. The numerical computation is carried out for various values of the non-dimensional physical parameters. The variation of temperature, concentration, heat and mass transfer coefficients with the power-law More >

  • Open Access

    ARTICLE

    MIXED CONVECTION BOUNDARY LAYER FLOW OVER A VERTICALLY STRETCHING SHEET WITH CONVECTIVE BOUNDARY CONDITION AND EFFECT OF PARTIAL SLIP

    Mitiku Daba*, P. Devaraj, S. V. Subhashini

    Frontiers in Heat and Mass Transfer, Vol.6, pp. 1-6, 2015, DOI:10.5098/hmt.6.3

    Abstract In the present study, we investigated a problem of steady laminar mixed convection flow over a vertically stretching sheet with partial slip under convective surface boundary condition. The governing partial differential equations of the boundary layer flow are reduced into a set of nonlinear ordinary differential equations using a suitable similarity transformations. The system of non linear ordinary differential equations are solved by the Keller box method. Velocity, temperature and heat transfer rate are analyzed by considering the important parameters: Prandtl number Pr, convective parameter ε, slip parameter K and mixed convection parameter λ on the More >

  • Open Access

    ARTICLE

    EFFECTS OF THERMAL AND SOLUTAL STRATIFICATION ON MIXED CONVECTION FLOW ALONG A VERTICAL PLATE SATURATED WITH COUPLE STRESS FLUID

    K. Kaladhara , D. Srinivasacharyab

    Frontiers in Heat and Mass Transfer, Vol.5, pp. 1-6, 2014, DOI:10.5098/hmt.5.11

    Abstract The effect of heat and mass stratification on mixed convection along a vertical plate embedded in a couple stress fluid has been presented. The nonlinear system of equations with appropriate boundary conditions is primarily reduced to non-dimensional form by pseudo-similarity transformations. Keller-box implicit finite difference scheme is employed to solve the resultant system of dimensionless equations. The validation of this scheme is shown through the comparison between the present and available literature under special case of the present problem. The couple stress parameter, mixed convection parameter and the double stratification parameter effects on the rates More >

  • Open Access

    ARTICLE

    Effects of Internal Heat Generation and Variable Fluid Properties on Mixed Convection Past a Vertical Heated Plate

    P. A. Dinesh1, N. Nalinakshi2, D. V. Ch,rashekhar3

    FDMP-Fluid Dynamics & Materials Processing, Vol.10, No.4, pp. 465-490, 2014, DOI:10.3970/fdmp.2014.010.465

    Abstract Heat and Mass transfer from a vertical heated plate embedded in a sparsely packed porous medium with internal heat generation and variable fluid properties like permeability, porosity and thermal conductivity has been investigated numerically. In particular, the governing highly non-linear coupled partial differential equations are transformed into a system of ordinary differential equations with the help of similarity transformations and solved numerically by using a shooting algorithm based on a Runge-Kutta-Fehlberg scheme and a Newton Raphson method (to obtain velocity, temperature and concentration distributions). The heat and mass transfer characteristics are analyzed and related physical More >

  • Open Access

    ARTICLE

    Mixed Convection and Heat Transfer in a “T” Form Cavity: The Effect of Inclination

    M’barka Mourabit1, Hicham Rouijaa1, El Alami Semma1, Mustapha El Alami2, Mostafa Najam2

    FDMP-Fluid Dynamics & Materials Processing, Vol.10, No.3, pp. 395-415, 2014, DOI:10.3970/fdmp.2014.010.395

    Abstract We study the effect of inclination angle on mixed convection in a "T" form cavity containing two openings and two heated blocks mounted on its lower wall. The blocks are maintained at a constant temperature TH. The lower wall is adiabatic and submitted to a vertical air jet while the upper wall is kept cold at a constant temperature TC < TH. The vertical walls are rigid and adiabatic. The governing equations are solved by a finite volume method. Special attention is devoted to the solution symmetry, the flow structure and the heat exchange through the cavity. More >

  • Open Access

    ARTICLE

    Forced-Mixed Convection Transition of a Buoyant Axisymmetric Jet with Variable Properties

    A. Abbassi1,2, H. Ben Aissia1

    FDMP-Fluid Dynamics & Materials Processing, Vol.10, No.1, pp. 115-147, 2014, DOI:10.3970/fdmp.2014.010.115

    Abstract This paper describes the transition from forced to mixed convection in a jet flow with variable properties. The classical laminar layer analysis is extended by taking into account the dependence of physical properties on temperature. The related model relies on the assumption that the variations of Prandtl number and specific heat at constant pressure are sufficiently small to be neglected. A second-order finite-difference numerical method based on a staggered grid is used to analyze transition, hydrodynamic and heat transfer phenomena in the jet. The dimensionless control parameter, Λ = T0/T, is limited to values less than More >

  • Open Access

    ARTICLE

    Mixed Convection Investigation in an Opened Partitioned Heated Cavity

    O. Mahrouche1, M. Najam1, M. El Alami1,2, M. Faraji1

    FDMP-Fluid Dynamics & Materials Processing, Vol.9, No.3, pp. 235-250, 2013, DOI:10.3970/fdmp.2013.009.235

    Abstract Mixed convection in a rectangular partitioned cavity equipped with two heated partitions at a constant temperature, TC, is investigated numerically. The right vertical wall is featured by two openings (C1 and C2) for admission of cooled air along the horizontal direction, while the lower wall has a single outlet opening (C3) along the vertical axis. The left vertical wall is assumed to be isothermal at temperature TC, while the other walls are cooled to a temperature TF < TC. The results show that the flow and heat transfer depend significantly on Reynolds number, Re, and block height, B. Correlation More >

  • Open Access

    ARTICLE

    Effect of Reynolds Number on Inclined Heated Semicircular Ducts at Different Rotations

    E. A. El-Abeedy1, A. A. Busedra1

    FDMP-Fluid Dynamics & Materials Processing, Vol.9, No.2, pp. 153-167, 2013, DOI:10.3970/fdmp.2013.009.153

    Abstract Fully developed laminar mixed convection in inclined semicircular ducts is investigated numerically for the specific case of uniform heat input along the axial direction and uniform peripheral wall temperature, H1. The duct is considered over a variety of orientations (rotations) of its cross section, ranging from 0° (flat wall horizontally facing upward) to 180° (flat wall horizontally facing downward) with increment of 45° and a fixed inclination of its axis (with respect to the direction of gravity). In particular, the following conditions are considered: inclination α = 20°, 300 ≤ Re ≤ 1000, Pr = 4 More >

  • Open Access

    ARTICLE

    Heat Transfer and Entropy Analysis for Mixed Convection in a Discretely Heated Porous Square Cavity

    A. Maougal1, R. Bessaïh2

    FDMP-Fluid Dynamics & Materials Processing, Vol.9, No.1, pp. 35-59, 2013, DOI:10.3970/fdmp.2013.009.035

    Abstract The present study is a numerical investigation of the irreversibility and heat transfer properties of a steady laminar mixed flow in a square cavity, filled with a saturated porous medium and heated by a discrete set of heat sources. The continuity, Navier-Stokes, energy and entropy generation equations have been solved by a finite volume method. Both heat transfer irreversibility and fluid friction irreversibility have been taken into account in the computations of entropy generation. Simulations have bee carried out for Reynolds number Re=20, 40, 80, 100, 200, Darcy number, Da=10-5-10-1, Prandtl number, Pr=0.015, 0.7, 10, 103, More >

Displaying 41-50 on page 5 of 57. Per Page