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

Oun, Hatem; Kennedy, Andrew R.

Abstract

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.

Citation

Oun, H., & Kennedy, A. R. (in press). Tailoring the pressure-drop in multi-layered open-cell porous inconel structures. Journal of Porous Materials, 22(6), https://doi.org/10.1007/s10934-015-0046-2

• 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
• DOI: https://doi.org/10.1007/s10934-015-0046-2
• Keywords: Single-phase flow ; Inconel multi-layer porous structures ; Thickness effect ; Material-efficient structures ; Air gap effect
• Public URL: https://nottingham-repository.worktribe.com/output/759424
• Publisher URL: http://link.springer.com/article/10.1007%2Fs10934-015-0046-2
• Additional Information: The final publication is available via Springer at http://link.springer.com/article/10.1007%2Fs10934-015-0046-2
• Contract Date: Jun 28, 2016