Numerical Study of Macropore Impact on Ponded Infiltration in Clay Soils
Kodešova Radka, Šimůnek Josef Kozak and Jiřihttps://doi.org/10.17221/6501-SWRCitation:Radka K., Josef Kozak and Jiři Š. (2006): Numerical Study of Macropore Impact on Ponded Infiltration in Clay Soils. Soil & Water Res., 1: 16-22.
The single-porosity and dual-permeability models in HYDRUS-1D (Šimůnek et al. 1998, 2003) were used to simulate variably-saturated water movement in clay soils with and without macropores. Numerical simulations of water flow for several scenarios of probable macropore compositions show a considerable impact of preferential flow on water infiltration in such soils. Preferential flow must be considered to predict water recharge in clay soils.Keywords:
ponded infiltration; macropores and fractures; preferential flow; single-porosity system; dual-permeability system; HYDRUS-1D