The paper presents numerical simulations of water infiltration in unsaturated porous media containing coarse-textured inclusions embed- ded in fine-textured background material. The calculations are performed using the two-phase model for water and air flow and a simplified model known as the Richards equation. It is shown that the Richards equation cannot correctly describe flow in the presence of heterogeneities. How- ever, its performance can be improved by introducing appropriately de- fined effective capillary and permeability functions, representing large- scale behaviour of the heterogeneous medium.
Authors
- prof. dr hab. inż. Adam Szymkiewicz link open in new tab ,
- Insa Neuweiler,
- Rainer Helmig
Additional information
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2014
