Ars software for simulation and design of surface irrigation

摘要

ARS surface-irrigation design methodology is based on simulations of irrigation-stream flows over the field surface. One- and two-dimensional ARS simulation models are reviewed herein. Computer programs aiding in the design of both layout and operation of level basins and of sloping borders utilize static databases storing thousands of previously obtained simulation results. Both simulation and design programs require users to input field topography, infiltration, and flow resistance, along with the target depth of application. ARS software aiding the effort to evaluate field conditions is described. The simulation programs also require input of system geometry and inflow hydrograph. The basin-design program allows exploration of the interplay between performance and length, width, and inflow. The border program shows what performance levels are possible with given field characteristics and application depth, as well as what combinations of design parameters will yield a given level. A new approach, introduced for furrow design, utilizes a dynamic database developed interactively, for the specified field conditions and furrow cross section.