Numerical computation of surface irrigation

Autor: Sakkas, J. G., Bellos, C. V., Klonaraki, M. N.
Zdroj: Irrigation Science; November 1994, Vol. 15 Issue: 2-3 p83-99, 17p
Abstrakt: A mathematical model based on the complete hydrodynamic equations describing open-channel flow is developed for simulation of a complete irrigation in a surface irrigation system. An explicit two-step numerical scheme has been employed for the solution of the flow equations. The total infiltrated water depth at each location along the field is determined. From this intermediate result three performance parameters, expressing the merits of the irrigation as affected by the magnitude of each of the various independent physical or management variables involved in the process, are evaluated. Through an analysis of these effects the selection of the proper size or magnitude of a number of the major parameters becomes possible and thus an optimum combination of the main design or operation parameters in a surface irrigation system can be obtained. Two examples of the proposed technique are included as well as some typical graphs of standardized solution.
Databáze: Supplemental Index