TY - BOOK ID - 14306779 TI - Modelling water flow in unsaturated porous media : accounting for nonlinear permeability and material heterogeneity PY - 2013 SN - 3642235581 364223559X 1283910322 3642426581 PB - Heidelberg : Springer, DB - UniCat KW - Hydrogeology -- Congresses. KW - Hydrogeology. KW - Hydrology -- Congresses. KW - Hydrology. KW - Groundwater flow KW - Zone of aeration KW - Porous materials KW - Geography KW - Earth & Environmental Sciences KW - Physical Geography KW - Mathematical models KW - Fluid dynamics KW - Transport theory KW - Mathematical models. KW - Permeability KW - Porous media KW - Earth sciences. KW - Geophysics. KW - Earth Sciences. KW - Hydrology/Water Resources. KW - Geophysics/Geodesy. KW - Materials KW - Porosity KW - Hydraulic engineering. KW - Physical geography. KW - Engineering, Hydraulic KW - Engineering KW - Fluid mechanics KW - Hydraulics KW - Shore protection KW - Geological physics KW - Terrestrial physics KW - Earth sciences KW - Physics KW - Aquatic sciences KW - Hydrography KW - Water KW - Geohydrology KW - Geology KW - Hydrology KW - Groundwater UR - https://www.unicat.be/uniCat?func=search&query=sysid:14306779 AB - The book focuses on two issues related to mathematical and numerical modelling of flow in unsaturated porous media. In the first part numerical solution of the governing equations is discussed, with particular emphasis on the spatial discretization of highly nonlinear permeability coefficient. The second part deals with large scale flow in heterogeneous porous media of binary structure. Upscaled models are developed and it is shown that the presence of material heterogeneities may give rise to additional non-equilibrium terms in the governing equations or to hysteresis in the averaged constitutive relationships. ER -