ارايه يك مدل رايانه اي به منظور ارزيابي ميزان آبدهي و راندمان توزيع آبگيرها در طول يك خط لوله آبياري كم فشار

A computer model showing the hydraulic performance of turnouts, along a low pressure irrigation pipeline

To deliver water from a large diameter irrigation pipeline to a smaller diameter plastic gated pipe so called "Hydroflume", a pipe turnout was designed, built and installed in the farms of the Suger Cane Developement and By-products Company, Ahwaz, Iran [1]. In this paper the hydraulic performance of these pipe turnouts along a low pressor irrigation pipeline and their sensitivity against variation of hydraulic gradient, which caused by opening and closing other turnouts, was calculated by a computer model which developed by the anther. Calculations by this computer model show that the discharge of all turnouts are varied by opening or closing any of the turnouts along the pipeline, but these variations are not equal for all operating turnouts. the turnouts which located at the end of pipeline are the most sensitive to the hydraulic gradicent i variation which may be abut 5 pereent. The procedure for sensitivity calculation and results are presented in this paper.