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Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v19.i6.40
pages 527-537

LIQUID FLOW THROUGH SANDS: RELIABILITY OF TORTUOSITY MEASURED FROM ELECTRICAL CONDUCTIVITY AND THE IMPORTANCE OF EVALUATING EFFECTIVE POROSITY

Agnes Montillet
L'Université Nantes Angers Le Mans (L'UNAM), GEPEA UMR CNRS 6144, B.P. 406, Université of Nantes, 37 Boulevard de l'Université, 44602 Saint-Nazaire, France
Abderrahmane O. A. Khalifa
L'Université Nantes Angers Le Mans (L'UNAM), GeM – Research Institute of Civil Engineering and Mechanics, CNRS UMR 6183, Nantes University – IUT Saint-Nazaire, 58 Rue Michel-Ange, 44600 Saint-Nazaire, France; Present affiliation: Magma, BP 2942, Nouakchott, Mauritania
Nour-Eddine Sabiri
L'Université Nantes Angers Le Mans (L'UNAM), GEPEA UMR CNRS 6144, B.P. 406, Université of Nantes, 37 Boulevard de l'Université, 44602 Saint-Nazaire, France

要約

Sand beds are commonly used in many industrial applications, mainly as a filtering medium, and in civil engineering. However, predicting the pressure drop of liquid flow through sand beds with simple models remains elusive. Among the many factors that explain this failure is the difficulty of determining tortuosity and effective bed porosity. This work investigates the experimental determination of hydraulic tortuosity of different natural sands from electrical conductivity. Different protocols are tested and discussed. They underline the importance of a proper determination of effective porosity, i.e., the fraction of bed volume concerned by fluid flow. Correct determination of the effective porosity may help to reconcile actual bed parameters with those determined from pressure data using a capillary-type flow model.


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