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Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v14.i10.90
pages 943-949

CONDITION FOR NEGLECTING UPSTREAM CONDITIONS WHEN SIMULATING FLOW IN GRANULAR BEDS

Mouaouia Firdaouss
LIMSI-CNRS (UPR 3251), BP 133, 91405 Orsay Cedex, France, and UFR 923, Universite Pierre et Marie Curie, Paris 6, France
M. Pons
LIMSI-CNRS (UPR 3251), BP 133, 91403 Orsay Cedex, France

RESUMO

One of the most frequent assumptions concerning fluid flow into porous tanks consists in neglecting the influence of upstream conditions on the flow inside the porous bed. The present study establishes the conditions when this assumption is valid. We determine the longitudinal distance into the porous bed after which the flow becomes uniform regardless of the velocity field upstream of the porous bed. We evaluate this distance of homogenization as a function of different parameters: tank fluid inlet velocity, entrance length of the tank, and Reynolds and Darcy numbers.


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