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

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

15 Citaten (Scopus)
196 Downloads (Pure)

Samenvatting

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.

Originele taal-2Engels
Pagina's (van-tot)260-274
Aantal pagina's15
TijdschriftChemical Engineering Science
Volume183
DOI's
StatusGepubliceerd - 29 jun 2018

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