Natural convection in a porous medium at high Rayleigh numbers - Application of Prandtl's analogy

被引：2
作者：
Rao, VD [1 ]
Naidu, SV
Sarma, PK
机构：
[1] Andhra Univ, Coll Engn, Dept Chem Engn, Waltair 530003, Andhra Pradesh, India
[2] Andhra Univ, Coll Engn, Dept Engn Mech, Waltair 530003, Andhra Pradesh, India
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1998年 / 76卷 / 04期
关键词：
natural convection; porous media; high Rayleigh numbers; Prandtl's analogy;
D O I：
10.1002/cjce.5450760405
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The problem of natural convection heat transfer from an isothermal vertical cylinder to a saturated porous medium is solved by the integral method making use of one-seventh profiles for velocity and temperature variation in the boundary layer. Prandtl's analogy is used to obtain the wall heat transfer coefficients. The results obtained for Rayleigh numbers greater than 10(9) and Prandtl numbers 4 and 0.12 are compared with experimental data from literature show satisfactory agreement. Also an approximate closed form solution is presented for the case of a flat wall to predict local Nusselt numbers.
引用
收藏
页码：717 / 721
页数：5
相关论文
共 50 条
  • [21] Critical Rayleigh number of natural convection in high porosity anisotropic horizontal porous layers
    Shiina, Yasuaki
    Hishida, Makoto
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2010, 53 (7-8) : 1507 - 1513
  • [22] Critical rayleigh number of natural convection in an anisotropic horizontal porous layer with high porosity
    Nuclear Applied Heat Technology Division, Japan Atomic Energy Agency, 4002 Oarai-machi, Higashi-Ibaraki-gun, Ibaraki, 311-1394, Japan
    Nihon Kikai Gakkai Ronbunshu, B, 2007, 9 (1876-1883): : 1876 - 1883
  • [23] THE PRANDTL NUMBER EFFECT NEAR THE ONSET OF BENARD CONVECTION IN A POROUS-MEDIUM
    LAGE, JL
    BEJAN, A
    GEORGIADIS, JG
    INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 1992, 13 (04) : 408 - 411
  • [24] Unsteady natural convection and heat transfer in a differentially heated cavity with a fin for high Rayleigh numbers
    Ma, Jia
    Xu, Feng
    APPLIED THERMAL ENGINEERING, 2016, 99 : 625 - 634
  • [25] Resonance of Natural Convection Inside a Bidisperse Porous Medium Enclosure
    Narasimhan, Arunn
    Reddy, B. V. K.
    JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2011, 133 (04):
  • [26] STEADY-STATE NATURAL-CONVECTION IN EMPTY AND PARTITIONED ENCLOSURES AT HIGH RAYLEIGH NUMBERS
    OLSON, DA
    GLICKSMAN, LR
    FERM, HM
    JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1990, 112 (03): : 640 - 647
  • [27] Numerical and experimental study of natural convection in tilted parallelepipedic cavities for large Rayleigh numbers
    Bairi, A.
    Laraqi, N.
    de Maria, J. M. Garia
    EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2007, 31 (04) : 309 - 324
  • [28] NATURAL-CONVECTION IN AN INCLINED FLUID LAYER WITH A TRANSVERSE MAGNETIC-FIELD - ANALOGY WITH A POROUS-MEDIUM
    VASSEUR, P
    HASNAOUI, M
    BILGEN, E
    ROBILLARD, L
    JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1995, 117 (01): : 121 - 129
  • [29] High Rayleigh number convection in a porous medium containing a thin low-permeability layer
    Hewitt, Duncan R.
    Neufeld, Jerome A.
    Lister, John R.
    JOURNAL OF FLUID MECHANICS, 2014, 756 : 844 - 869
  • [30] Natural convection from narrow horizontal plates at moderate Rayleigh numbers
    Martorell, I
    Herrero, J
    Grau, FX
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2003, 46 (13) : 2389 - 2402
12345