Hysteresis in Unsaturated Porous Media-Two Models for Wave Propagation and Engineering Applications

0458381 - MÚ 2017 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Albers, B. - Krejčí, Pavel
Hysteresis in Unsaturated Porous Media-Two Models for Wave Propagation and Engineering Applications.
Continuous Media with Microstructure 2. Cham: Springer, 2016 - (Albers, B.; Kuczma, M.), s. 217-229. ISBN 978-3-319-28239-8.
[2nd International Conference on Continuous Media with Microstructure. Łagów (PL), 02.03.2015-05.03.2015]
Grant CEP: GA ČR(CZ) GA15-12227S
Institucionální podpora: RVO:67985840
Klíčová slova: hysteresis
Kód oboru RIV: BA - Obecná matematika
http://link.springer.com/chapter/10.1007/978-3-319-28241-1_15

Two models for the description of unsaturated porous media flow are revisited. The first is a continuum model suitable for the description of sound wave propagation in elastic media. Even if the model does not contain a hysteresis operator, the effect of hysteresis in the capillary pressure curve is accounted for. The two processes drainage and imbibition are investigated separately and the limit values of material parameters and acoustic properties are determined. The second model is a thermomechanical model capable for the description of flows in elastoplastic porous media. It contains two independent hysteresis operators describing hysteresis phenomena in both the solid and the pore fluids.
Trvalý link: http://hdl.handle.net/11104/0258648