Generalized macroscopic model for unsaturated water flow in binary porousmedia

Zeit:	25. Oktober 2005, 17:00 – 18:30 Uhr
Referent*in:	Dr. Adam Szymkiewicz, Institute of Hydroengineering of the Polish Academy of Sciences
Veranstaltungsort:	Pfaffenwaldring 61, Raum U1.003 (MML), Universität Stuttgart
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Binary porous media are composed of two materials having differenthydraulic properties. According to the asymptotic homogenization theory,the unsaturated flow in such type of media is described with variousmodels, depending on the ratio of the hydraulic diffusivity of the twocomponents and the connectivity of the most conductive component. It canbe shown that a continuous passage between various models exist. It isalso possible to deduce a generalized model, suitable for the entire rangeof the diffusivity ratio. The obtained results are compared with othermodels that can be found in the literature.