Abstract
The interaction (coupling) between grains and pore fluid is manifested in the static case (no relative motion between grains and pore fluid) as well as in the dynamic case. In the static case (i.e. no relative velocity between grains and pore fluid), the important item is the so-called principle of effective stress. In the dynamic case the interaction is mainly expressed by Darcy’s law and the so-called inertia coupling. We shall see that the pertinent relations are of limited validity. Before doing so we shall consider the main equations of the theory of mixtures which are very useful when dealing with composite materials. It should be stressed that we consider here only granular media where the grains form a grain skeleton. Thus, dispersions of grains within a fluid carrier are here not considered.
Dedicated to the memory of Prof. Dr. W. Günther
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© 1998 Springer-Verlag Wien
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Kolymbas, D. (1998). Coupling: Pore Fluid-Grains Interaction. In: Cambou, B. (eds) Behaviour of Granular Materials. International Centre for Mechanical Sciences, vol 385. Springer, Vienna. https://doi.org/10.1007/978-3-7091-2526-7_4
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DOI: https://doi.org/10.1007/978-3-7091-2526-7_4
Publisher Name: Springer, Vienna
Print ISBN: 978-3-211-82920-2
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