The SASIS model: validation of furrow irrigation simulation

Revista Brasileira de Engenharia Agrícola e Ambiental

Azevedo, Carlos A. V. de²  Lima, Vera L. A. de²  Pordeus, Roberto V.¹  Azevedo, Márcia R. de Q. A.³  Dantas Neto, José²  Matos, José de A. de¹ 

[1] UFERSA, Mossoró;UFCG, Campina Grande;UEPB, Campina Grande

关键词: surface irrigation;    kinematic wave model;    water management    INTRODUÇÃO A simulação matemática da irrigação por superfície tem processos complexos na hidráulica do escoamento superficial;    os quais têm sido simulados por modelos computacionais com amplo grau de complexidade e precisão: (Strelkoff & Katopodes;    1977;    Elliott et al;   

DOI  :  10.1590/S1415-43662008000100002

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The aim of this research was to validate the simulation of furrow irrigation performed by the SASIS model through the mathematical procedure of kinematic waves. In the validation of the SASIS model, 7 data sets representing different field conditions were used, in which the furrow length varied from 67 to 403 m, the field slope from 0.0016 to 0.0173 m m-1, the inflow from 1.1 to 2.0 L s-1 and the soil texture type from sandy loam to silty clay loam. In order to give more consistency to the validation, the simulations accomplished by this model were compared with those from the SIRMOD model, and also compared with data from the field measurements. For most field data studied, the simulations of the advance phase by SASIS model presented discrepancies in the advance time at the end of the area, being inferior to the ones given by SIRMOD model, in relation to field measurements. Again, for the greater part of field conditions analyzed, the discrepancies between the values simulated by SASIS model and those measured in field of the advance time at the end of the area were small, to the point of not compromising the prognostic of design, evaluation and management parameters of furrow irrigation systems.

【 授权许可】

CC BY-NC