Journal ArticleDOI
Mixed Convection about a Nonisothermal Cylinder and Sphere in a Porous Medium
TLDR
In this paper, the problems of mixed convection about a nonisothermai horizontal cytiner and sphere embedded in a porous medium are analyzed based on a curvilinear orthogonal coordinate system together with boundary-layer simplifications.Abstract:
The problems of mixed convection about a nonisothermai horizontal cytiner and sphere embedded in a porous medium are analyzed based on a curvilinear orthogonal coordinate system together with boundary-layer simplifications. Different transformations were performed for the horizontal cylinder and the sphere, and the resulting equations are identical for the two geometries. Approximate solutions for the problems are obtained based on the nonlocal similarity method. Numerical computations for the temperature distribution and heat flux were carried out up to the third level of truncation. The effects of buoyancy and wall temperature variations on heat transfer characteristics about a heated horizontal cylinder and sphere in a porous medium are examined.read more
Citations
More filters
Journal ArticleDOI
Mixed convection flow in a lid-driven enclosure filled with a fluid-saturated porous medium
K. Khanafer,Ali J. Chamkha +1 more
TL;DR: In this paper, the volume averaged equations governing unsteady, laminar, mixed convection flow in an enclosure filled with a Darcian fluid-saturated uniform porous medium in the presence of internal heat generation are formulated.
Journal ArticleDOI
Unsteady MHD convective heat and mass transfer past a semi-infinite vertical permeable moving plate with heat absorption
TL;DR: In this paper, the authors considered the problem of unsteady, two-dimensional, laminar, boundary-layer flow of a viscous, incompressible, electrically conducting and heat absorbing fluid along a semi-infinite vertical permeable moving plate in the presence of a uniform transverse magnetic field and thermal and concentration buoyancy effects.
Journal ArticleDOI
Non-darcy fully developed mixed convection in a porous medium channel with heat generation/absorption and hydromagnetic effects
TL;DR: In this paper, volume-averaged equations are developed governing steady, laminar, fully developed, hydromagnetic mixed convection non-Darcian flow of an electrically conducting and heat-generating / absorbing fluid in a channel embedded in a uniform porous medium.
Journal ArticleDOI
Natural Convective Boundary Layer Flow Over a Nonisothermal Vertical Plate Embedded in a Porous Medium Saturated With a Nanofluid
TL;DR: In this article, a boundary layer analysis is presented for the natural convection past a nonisothermal vertical plate in a porous medium saturated with a nanofluid, and the dependency of the friction factor, surface heat transfer rate (Nusselt number), and mass transfer rate on these parameters is discussed.
Journal ArticleDOI
Non-similar Solution for Natural Convective Boundary Layer Flow Over a Sphere Embedded in a Porous Medium Saturated with a Nanofluid
TL;DR: In this article, a boundary layer analysis for the natural convection past an isothermal sphere in a Darcy porous medium saturated with a nanofluid is presented, and the dependency of the friction factor, surface heat transfer rate, and mass transfer rate on these parameters has been discussed.
References
More filters
Journal ArticleDOI
Free convection about a vertical flat plate embedded in a porous medium with application to heat transfer from a dike
Ping Cheng,W. J. Minkowycz +1 more
TL;DR: In this article, an analysis is made for steady free convection about a vertical flat plate embedded in a saturated porous medium at high Rayleigh numbers, where boundary layer thickness, local and overall surface heat flux, and local and average heat transfer coefficients are derived for an isothermal dike intruded in an aquifer.
Book ChapterDOI
Heat Transfer in Geothermal Systems
TL;DR: In this paper, the authors discuss the mathematical formulation of convective heat transfer in geothermal systems and the prediction of reservoir behavior under production can be obtained by idealizing it as a saturated porous medium.
Journal ArticleDOI
Local non- similarity thermal boundary- layer solutions
Ephraim M Sparrow,H. S. Yu +1 more
TL;DR: In this article, a solution method is described and applied for treating non-similar thermal boundary layers, where the solutions are locally autonomous and are found by solving quasi-ordinary differential equations of the similarity type.
Journal ArticleDOI
Local nonsimilarity boundary-layer solutions
TL;DR: In this article, a new solution method for nonsimilarity boundary layers, applicable locally and independently of information from other stream wise positions, is described and implemented, which is of the same type as those encountered in the treatment of similarity boundary layers.
Journal ArticleDOI
Combined free and forced convection flow about inclined surfaces in porous media
TL;DR: In this paper, the problem of combined free and forced convection about inclined surfaces (or wedges) in a saturated porous medium is analyzed on the basis of boundary-layer approximations.
Related Papers (5)
Mixed convection boundary-layer flow along a vertical surface in a porous medium
P. Ranganathan,R. Viskanta +1 more
Free convection about a vertical flat plate embedded in a porous medium with application to heat transfer from a dike
Ping Cheng,W. J. Minkowycz +1 more
Boundary and inertia effects on flow and heat transfer in porous media
Kambiz Vafai,Chuen-Lin Tien +1 more