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Tailoring the pressure-drop in multi-layered open-cell porous inconel structures

Oun, Hatem; Kennedy, Andrew R.

Tailoring the pressure-drop in multi-layered open-cell porous inconel structures Thumbnail


Hatem Oun

Andrew R. Kennedy


This study investigates the pressure-drop behaviour associated with airflow through bulk and structurally tailored multi-layered, open-cell porous Inconel structures over a wide airflow velocity range (0–50 m s-1). The effect of airflow velocity on the pressure-drop behaviour as a function of the sample thickness is presented and related to the flow behaviour corresponding to the relevant flow regimes (Darcy, Forchheimer, Turbulent and Postturbulent). Entrance effects are highlighted as a source of the pressure-drop increase for porous structures with air gaps, regardless of their sizes, as long as they are larger than those generated by loosely-stacked structures. The pressure-drops for gapped porous structures and the mathematical-summation of the pressure drop for the corresponding individual components, were in very good agreement, at lower airflow velocities. The potential for mass-efficient porous structures, providing a high pressure drop, was demonstrated using multiple thin porous laminates separated by air gaps.

Journal Article Type Article
Acceptance Date May 7, 2015
Online Publication Date Aug 6, 2015
Deposit Date Jun 28, 2016
Publicly Available Date Jun 28, 2016
Journal Journal of Porous Materials
Print ISSN 1380-2224
Electronic ISSN 1573-4854
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 22
Issue 6
Keywords Single-phase flow ; Inconel multi-layer porous structures ; Thickness effect ; Material-efficient structures ; Air gap effect
Public URL
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Additional Information The final publication is available via Springer at


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