Document Type : Original Article
Author
razi university
Abstract
Proper operation of irrigation networks because of population growth and limited water resources is essential. The poor operational performance of irrigation systems is partly a result of improper distribution of water to the tertiary units and branches. Progress of computers and numerical methods caused developing models for flow simulation and optimizing water distribution in irrigation networks. In this study, the genetic algorithm has used in order to determine the optimal schedule of water distribution in BLMC channel of Bilavar network, located in Kermanshah Province. The optimal schedule of water distribution was presented in form of single purpose, including minimizing the difference between the delivery and required amount of water for each farms. Initially, the genetic algorithm parameters and operators impact on the objective function were studied using sensitivity analysis. Suitable values for number of generations, population size, crossover and mutation probability for optimizing water distribution determined 250, 200, 90% and 1%, respectively. In case that water pump on and off occurs every 24 hours, differences between delivered and needed volume of water for all farms in Bilavar network, during second decade of April and early May, are 28910 and 14130 cubic meters, respectively.
Keywords
distribution policy in an irrigation network (case study: Qurichay network). J. Agric. Sci. 30(2):
369-378. (in Persian)
)