RODRIGUEZ DE CASTRO, Antonio; OMARI, Abdelaziz; AHMADI-SENICHAULT, Azita; BRUNEAU, Denis

doi:10.1007/s11242-013-0248-5

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RODRIGUEZ DE CASTRO, Antonio

OMARI, Abdelaziz

AHMADI-SENICHAULT, Azita

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Transport in Porous Media. 2013-11, vol. 101, n° 3, p. 349-364

Springer Verlag

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Current experimental methods used to determine pore size distributions (PSD) of porous media present several drawbacks such as toxicity of the employed fluids (e.g., mercury porosimetry). The theoretical basis of a new method to obtain the PSD by injecting yield stress fluids through porous media and measuring the flow rate Q at several pressure gradients ∇P was proposed in the literature. On the basis of these theoretical considerations, an intuitive approach to obtain PSD from Q(∇P) is presented in this work. It relies on considering the extra increment of Q when ∇P is increased, as a consequence of the pores of smaller radius newly incorporated to the flow. This procedure is first tested and validated on numerically generated experiments. Then, it is applied to exploit data coming from laboratory experiments and the obtained PSD showgood agreement with the PSD deduced frommercury porosimetry.< Leer menos

Palabras clave en inglés

Pore size distribution

Experimental method

Yield stress

Porosimetry

porous media

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Towards a new method of porosimetry: principles and experiments

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