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TECHNICAL PAPERS

Air Flow Through Compressed and Uncompressed Aluminum Foam: Measurements and Correlations

[+] Author and Article Information
Nihad Dukhan

Department of Mechanical Engineering, University of Detroit Mercy, Detroit, MI 48221nihad.dukhan@udmercy.edu

Rubén Picón-Feliciano

Department of Mechanical Engineering, University of Puerto Rico-Mayagüez, Mayagüez, PR 00681ruben-picon@hotmail.com

Ángel R. Álvarez-Hernández

 NASA Johnson Space Center, Houston, TX 77058angel-alvarez-hernandez@yahoo.com

J. Fluids Eng 128(5), 1004-1012 (Jan 31, 2006) (9 pages) doi:10.1115/1.2236132 History: Received June 17, 2005; Revised January 31, 2006

Wind-tunnel steady-state unidirectional pressure-drop measurements for airflow through nine compressed and uncompressed isotropic open-cell aluminum foam samples, having different porosities and pore densities, were undertaken. The compressed foam produced significantly higher pressure drop, which increased with increasing Darcian velocity following the quadratic Forchheimer equation. The permeability and the inertia coefficient data for the compressed foam showed less scatter compared to those for the uncompressed foam. Both were correlated using an Ergun-like equation, with the correlation being better for the permeability. The permeability correlation predicted the results of some previous studies very well. The friction factor correlated well with the Reynolds number.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

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Figure 1

(a) Schematic of wind tunnel. (b) Photograph of foam sample mounted in test section.

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Figure 2

Pressure drop versus Darcian velocity (a) for 10ppi and (b) for 20ppi foam

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Figure 3

Permeability versus Darcian velocity (a) for 10ppi and (b) for 20ppi foam

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Figure 4

Inertia coefficient versus Darcian velocity (a) for 10ppi and (b) for 20ppi foam

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Figure 5

Friction factor versus Reynolds number (a) for 10ppi and (b) for 20ppi foam

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Figure 6

Permeability versus Ergun parameter

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Figure 7

Inertia coefficient versus Ergun parameter

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