TECHNICAL PAPERS: Heat Transfer Enhancement

Using Porous Fins for Heat Transfer Enhancement

[+] Author and Article Information
S. Kiwan, M. A. Al-Nimr

Mechanical Engineering Department, Jordan University of Science and Technology, Irbid-Jordan

J. Heat Transfer 123(4), 790-795 (Jul 14, 2000) (6 pages) doi:10.1115/1.1371922 History: Received January 20, 2000; Revised July 14, 2000
Copyright © 2001 by ASME
Your Session has timed out. Please sign back in to continue.


Duffin,  R., 1959, “A Variational Problem Relating to Cooling Fins,” J. Math. Mech., 8, pp. 47–56.
Jany,  P., and Bejan,  A., 1988, “Ernst Schmidt’s Approach to Fin Optimization: An Extension to Fins with Variable Conductivity and the Design of Ducts for Fluid Flow,” Int. J. Heat Mass Transf., 31, pp. 1635–1644.
Bejan, A., 1984, Convection Heat Transfer, John Wiley and Sons, New York.
Snider,  A. D., and Kraus,  A. D., 1986, “The Quest for the Optimum Longitudinal Fin Profile,” ASME HTD, 64, pp. 43–48.
Poulikakos,  D., and Bejan,  A., 1982, “Fin Geometry for Minimum Entropy Generation in Forced Convection,” ASME J. Heat Transfer, 104, pp. 616–623.
Irey,  R. K., 1968, “Errors in the One-Dimensional Fin Solution,” ASME J. Heat Transfer, 90, pp. 175–176.
Lau,  W., and Tan,  C. W., 1973, “Errors in One-Dimensional Heat Transfer Analyses in Straight and Annular Fins,” ASME J. Heat Transfer, 95, pp. 549–551.
Stachiewicz,  J. W., 1969, “Effect of Variation of Local Film Coefficient on Fin Performance,” ASME J. Heat Transfer, 91, pp. 21–26.
Look,  D. C., 1988, “Two-Dimensional Fin Performance: Bi (Top Surface) ≥ Bi (Bottom Surface),” ASME J. Heat Transfer, 110, pp. 780–782.
Alkam,  M., and Al-Nimr,  M. A., 1999, “Improving the Performance of Double-Pipe Heat Exchangers by Using Porous Substrates,” Int. J. Heat Mass Transf., 42, pp. 3609–3618.
Al-Nimr,  M. A., and Alkam,  A., 1998, “A Modified Tubeless Solar Collector Partially Filled with Porous Substrate,” Renewable Energy, 13(2), pp. 165–173.
Alkam,  M. K., and Al-Nimr,  M. A., 1999, “Solar Collectors with Tubes Partially Filled with Porous Substrates,” ASME J. Sol. Energy Eng., 121, pp. 20–24.
Al-Nimr,  M. A., and Alkam,  M., 1997, “Unsteady Non-Darcian Forced Convection Analysis in an Annulus Partially Filled with a Porous Material,” ASME J. Heat Transfer, 119, pp. 799–804.
Vafai,  K., and Kim,  S. J., 1995, “On the Limitations of the Brinkman-Forchheimer-Extended Darcy Equation,” Int. J. Heat Fluid Flow, 16, pp. 11–15.
Engelman, M. S., 1993, Fidap Theoretical Manual-Revision 7, 1st ed., Fluid Dynamics International, Inc., Evanston, IL.
del Vahl Davis,  G., 1983, “Natural Convection in a Square Cavity–A Benchmark Solution,” Int. J. Numer. Methods Fluids, 3, pp. 249–264.


Grahic Jump Location
Schematic diagram for the fins configuration
Grahic Jump Location
Finite element mesh for the flow field
Grahic Jump Location
Simple simulation for the porous fin
Grahic Jump Location
Effect of slides number on the heat transfer ratio and on the fraction of saved material
Grahic Jump Location
Sample plot for the (a) streamlines and (b) isotherms in the flow field
Grahic Jump Location
Effect of thermal conductivity ratio on the heat transfer ratio for different fin lengths
Grahic Jump Location
Effect of solid to fluid thermal conductivity ratio on fin porosity
Grahic Jump Location
Effect of Rayleigh number on the heat transfer ratio for different Darcy numbers
Grahic Jump Location
Effect of thermal conductivity ratio on Nusselt number at different fin lengths




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In