A Physically Based Two-Dimensional Infiltration Model for Furrow Irrigation

Authors

Christopher J. Skonard, University of Nebraska-Lincoln
Derrel L. Martin, University of Nebraska--LincolnFollow

Date of this Version

2002

Document Type

Article

Comments

Written for presentation at the 2002 ASAE Annual International Meeting / CIGR XVth World Congress Sponsored by ASAE and CIGR. ASAE Paper 022063

Abstract

A two-dimensional physically based infiltration model was developed for furrow
irrigation. Infiltration was simulated using the Green-Ampt infiltration method. The Green-Ampt infiltration parameters are available from numerous sources, unlike the Kostiakov infiltration parameters. Simulation tests showed the two-dimensional model capable of estimating cumulative infiltration volume within 8% compared to simulated infiltration using the finite element model, Hydrus-2D. Application of the two-dimensional model in a surface irrigation advance model allows irrigation performance parameters to be predicted without extensive soil experiments.