Air flow through confined metal foam passage: Experimental investigation and mathematical modelling

Sajid Hossain, M and Shabani, B 2018, 'Air flow through confined metal foam passage: Experimental investigation and mathematical modelling', Experimental Thermal and Fluid Science, vol. 99, pp. 13-25.


Document type: Journal Article
Collection: Journal Articles

Title Air flow through confined metal foam passage: Experimental investigation and mathematical modelling
Author(s) Sajid Hossain, M
Shabani, B
Year 2018
Journal name Experimental Thermal and Fluid Science
Volume number 99
Start page 13
End page 25
Total pages 13
Publisher Elsevier Inc.
Abstract This paper deals with flow behaviour through a confined passage filled with metal foams (MFs). Two sets (four samples) of aluminium foams of 20 and 40 ppi pore densities with 9-11% and 12-16% relative densities (RD) individually (as per supplier's specification) were used for the study. Former RD belonged to uncompressed metal foams whereas the later was achieved by unidirectional compression of metal foam of 6-8% RD. Measured porosities of the uncompressed 20 and 40 ppi MF samples were equal, which was 0.88. However, measured porosities were 0.83 and 0.86 for compressed 20 and 40 ppi MF samples. Flow characteristics of both compressed and uncompressed samples were experimentally measured. Fourie-Plessis's representative unit cell (RUC) model was used as an analytical tool for estimating pressure drop gradient through MFs because of its simplistic approach and independency from flow characteristics. Possible encasing wall effect on pressure drop was theoretically conducted. Due to a significant difference in estimated and experimentally obtained pressure drop gradient, authors have proposed a modification in the RUC model. The modified version of the RUC model was able to estimate pressure drop gradient of the uncompressed samples with a considerably higher accuracy.
Subject Energy Generation, Conversion and Storage Engineering
Mechanical Engineering not elsewhere classified
Fluidisation and Fluid Mechanics
Keyword(s) Confined flow passage
Experimental study
Fluid flow
Metal foam
Theoretical modeling
DOI - identifier 10.1016/j.expthermflusci.2018.07.018
Copyright notice © 2018 Elsevier Inc. All rights reserved.
ISSN 0894-1777
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