Uniformidade de aplicação de água de equipamentos autopropelidos de irrigação com aspersores de perfil radial triangular, elíptico e retangular

• Autor(a) principal: Prado, Giuliani do
• Data de Publicação: 2012
• Outros Autores: Colombo, Alberto, Oliveira, Henrique Fonseca Elias de, Faria, Lessandro C.
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UFLA
• Texto Completo: http://repositorio.ufla.br/jspui/handle/1/11555
• topic: Irrigação por aspersores; Modelo computacional; Sprinkler irrigation; Computational models

This study presents digital simulation results of water application uniformity of self-propelled irrigation systems, under windless conditions. In the digital simulations, we considered sprinklers with triangular, elliptical and rectangular radial water distribution profiles, working under different combinations of angle of rotation (from 180º to 360º) and spacing between carriers (from 0 to 100% of the wet diameter - WD). Simulation results were presented in three distinct groups, each one representing the same geometric shape of the radial water distribution profile. Regardless of the angle of rotation, the best values of uniformity were obtained with spacing lower than 45% and between 55% and 70% of WD for the triangular radial profile, and with spacing lower than 50% and between 70% and 90% of WD for the elliptical and rectangular radial profile. For the three radial distribution profiles, the sprinkler angles of rotation which range between 180º and 230º generate higher values of uniformity coefficient.