Drag and heat transfer closures for realistic numerically generated random open-cell solid foams using an immersed boundary method

S. Das, S. Sneijders, N.G. Deen, J.A.M. Kuipers

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)
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Abstract

In this paper, we apply a novel immersed boundary method to simulate pore-scale level fluid flow and convective heat transfer in realistic numerically generated open-cell solid foams in a Cartesian computational domain. Five different periodic foam samples of varying porosities (ε=[0.877,0.948]) are generated by numerically mimicking the actual foam formation process (minimizing surface area). The step-by-step procedure for generating the periodic foam geometries is presented. The specific surface areas of the generated foams of different porosities are compared with real foam geometries showing a reasonable agreement. The Reynolds number (Re) is varied from Re≈0 (creeping flow) to Re≈500, and finally drag and Nusselt correlations have been proposed. A detailed analysis is presented on the local velocity and temperature field for the fluid-solid interaction in a complex cellular porous medium.

Original languageEnglish
Pages (from-to)260-274
Number of pages15
JournalChemical Engineering Science
Volume183
DOIs
Publication statusPublished - 29 Jun 2018

Keywords

  • Cellular porous media
  • Drag closure
  • Heat transfer closure
  • Immersed boundary method
  • Open-cell solid foams
  • Periodic boundary treatment

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