Characteristics of oscillating liquid flow in foam-like highly-porous media: An experimental study

Özer Bağci, Nihad Dukhan*, Mustafa Özdemir

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Characteristics of oscillating water flow in open-cell metal foam were obtained experimentally. The foam had 20. pores per inch and a porosity of 87.6%. Three flow displacements 74.35, 97.2 and 111.53. mm were applied in the flow frequency range 0.116-0.696. Hz. Steady-state experiment was also conducted and the permeability and form/inertial drag coefficient were obtained. The range of flow velocity covered Darcy and Forchheimer flow regimes. The effect of flow displacement and frequency on important variables is presented and discussed. The appropriately defined friction factor correlated well with the Reynolds number for steady-state and oscillating flows, with the friction factor for oscillating flow being higher. The current results were compared to other studies from the literature employing oscillating air and water in various kinds of porous media. Some agreements and disagreements are stated and discussed.

Original languageEnglish
Pages (from-to)96-105
Number of pages10
JournalExperimental Thermal and Fluid Science
Publication statusPublished - Jan 2015

Bibliographical note

Publisher Copyright:
© 2014 Elsevier Inc.


This work was supported by the Scientific & Technological Research Council of Turkey (TUBİTAK) under program 2221: 1059B211301074, for which the authors are very thankful.

FundersFunder number
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu


    • Friction factor
    • Kinetic reynolds number
    • Metal foam
    • Oscillating flow
    • Porous media
    • Regenerator


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