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The basic scales of natural convection heat and mass transfer in fluids and fluid-saturated porous media

Publication ,  Journal Article
Bejan, A
Published in: International Communications in Heat and Mass Transfer
January 1, 1987
Published version (DOI)

The parallel structure of the fields of natural convection in fluids and natural convection in porous media is reviewed in terms of the most basic scales of flow, heat and mass transfer. In each field, the review includes single vertical boundary layers, enclosures, heat and mass transfer in the presence of temperature and concentration buoyancy effects, Benard flow and new or still unexplored directions of research. In particular, an original scale analysis of the nonDarcy regime in a porous layer heated from below shows that the Darcy-nonDarcy transition occurs when the Darcy-Rayleigh number Rak exceeds O(Prp), where Prp is an important new dimensionless group called “the porous medium Prandtl number.” In the nonDarcy regime the Nusselt number scales as Rak½ times Prp½. © 1987, Pergamon Journals Ltd.. All rights reserved.

Duke Scholars

Adrian Bejan
Author Adrian Bejan Thomas Lord Department of Mechanical Engineering and Materia ...

Published In

International Communications in Heat and Mass Transfer

DOI

10.1016/S0735-1933(87)81002-3

ISSN

0735-1933

Publication Date

January 1, 1987

Volume

14

Issue

2

Start / End Page

107 / 123

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4012 Fluid mechanics and thermal engineering
  • 0913 Mechanical Engineering
 

Citation

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ICMJE
MLA
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Bejan, A. (1987). The basic scales of natural convection heat and mass transfer in fluids and fluid-saturated porous media. International Communications in Heat and Mass Transfer, 14(2), 107–123. https://doi.org/10.1016/S0735-1933(87)81002-3
Bejan, A. “The basic scales of natural convection heat and mass transfer in fluids and fluid-saturated porous media.” International Communications in Heat and Mass Transfer 14, no. 2 (January 1, 1987): 107–23. https://doi.org/10.1016/S0735-1933(87)81002-3.
Bejan A. The basic scales of natural convection heat and mass transfer in fluids and fluid-saturated porous media. International Communications in Heat and Mass Transfer. 1987 Jan 1;14(2):107–23.
Bejan, A. “The basic scales of natural convection heat and mass transfer in fluids and fluid-saturated porous media.” International Communications in Heat and Mass Transfer, vol. 14, no. 2, Jan. 1987, pp. 107–23. Scopus, doi:10.1016/S0735-1933(87)81002-3.
Bejan A. The basic scales of natural convection heat and mass transfer in fluids and fluid-saturated porous media. International Communications in Heat and Mass Transfer. 1987 Jan 1;14(2):107–123.
Journal cover image

Published In

International Communications in Heat and Mass Transfer

DOI

10.1016/S0735-1933(87)81002-3

ISSN

0735-1933

Publication Date

January 1, 1987

Volume

14

Issue

2

Start / End Page

107 / 123

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4012 Fluid mechanics and thermal engineering
  • 0913 Mechanical Engineering