New Similarity Solutions for Boundary-Layer Flow on a Horizontal Surface in a Porous Medium

被引：0
作者：
E. Magyari
I. Pop
B. Keller
机构：
[1] Swiss Federal Institute of Technology (ETH) Zürich,Chair of Physics of Buildings, Institute of Building Technology
[2] University of Cluj,I. Pop, Faculty of Mathematics
来源：
Transport in Porous Media | 2003年 / 51卷
关键词：
forced convection; free convection; mixed convection; boundary layers; permeable horizontal surfaces; similarity solutions; suction; injection; heat transfer; fluid saturated porous media;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
New similarity solutions for free, forced, and mixed convection boundary-layer flow on a permeable horizontal surface embedded in a fluid-saturated porous medium are presented in this paper. Analytical solutions have been obtained for some specific velocity and temperature profiles. The generic case corresponding to a 1/x-type distribution of both the wall temperature and the outer velocity is discussed in detail. In the plane (U, γ) defined by the mixed convection parameter U and the suction/injection parameter γ, the existence domain of physical solutions is identified and the main characteristics (wall temperature gradients, decay rates, uniqueness, multiplicity, etc.) of these solutions are investigated systematically.
引用
收藏
页码：123 / 140
页数：17
相关论文
共 17 条
[1]  
Cheng P.(1977)The influence of lateral mass flux on the free convection boundary layers in a saturated porous medium Int. J. Heat Mass Transfer 20 201-205
[2]  
Cheng P.(1976)Buoyancy induced flows in a saturated porous medium adjacent to a impermeable horizontal surfaces Int. J. Heat Mass Transfer 19 1267-1272
[3]  
Chang I. D.(1977)Free convection about a vertical flat plate embedded in a porous medium with application to heat transfer from a dike J. Geophys. Res. 82 2040-2044
[4]  
Cheng P.(1986)Flow past a suddenly heated vertical plate in a porous medium Proc. R. Soc. London A403 51-80
[5]  
Minkowycz W. J.(1978)Possible similarity solutions for free convection boundary layers adjacent to flat plates in porous media Int. J. Heat Mass Transfer 21 709-718
[6]  
Ingham D. B.(2002)The ‘missing’ self-similar free convection boundary-layer flow over a vertical permeable surface in a porous medium Transport in Porous Media 46 91-102
[7]  
Brown S. N.(1979)Free convection boundary layers on axi-symmetric and two-dimensional bodies of arbitrary shape in a saturated porous medium Int. J. Heat Mass Transfer 22 1461-1462
[8]  
Johnson C. H.(1997)Mixed convection on a horizontal surface embedded in a porous medium: the structure of a singularity Transport in Porous Media 9 355-364
[9]  
Cheng P.(1990)On the similarity solutions for free convection in a saturated porous medium adjacent to impermeable horizontal surfaces Wärme-und Stoffübertragung 25 179-184
[10]  
Magyari E.(undefined)undefined undefined undefined undefined-undefined
12