ТЕОРЕТИЧЕСКИЕ ИССЛЕДОВАНИЯ ДВИЖЕНИЯ ВОДЫ В ДОЖДЕВАТЕЛЯХ С ВРАЩАЮЩИМСЯ ДЕФЛЕКТОРОМ ШИРОКОЗАХВАТНЫХ ДОЖДЕВАЛЬНЫХ МАШИН

Abstract

Domestic and foreign scientists have accumulated extensive experience in designing sprinklers and sprayers installed both on wide-span sprinklers and for watering flowerbeds and lawns. The base of recommendations for the choice of modifications, design parameters and operating modes, as a rule, included the results of experimental studies. The data obtained were determined by specific operating conditions, operating modes and specific design features of sprinklers. A generalized calculation method applicable for the purpose of designing sprinklers for certain purposes and conditions has not been identified. The purpose of the presented study is to study the movement of water in sprinklers with a rotating deflector in order to optimize design parameters and operating modes. The article considers the process of interaction of the water flow with the sprinkler deflector. The influence of the flow rate of the liquid supplied through the sprinkler on the size of the droplets of the sprayed liquid is presented. An increase in fluid flow leads to an increase in the diameter of the droplets. The trajectory of the grooves on the deflector has a significant impact on the formation of the speed and trajectory of the water droplets. The analysis shows that water acquires the greatest speed when leaving a rotating deflector having grooves of 3-5 mm in size at a flow rate of 1.5-3.5 l/s and small grooves of 1.5-2.5 mm occupying the area of the entire deflector at a low flow rate of up to 1.5 l/s. The conducted studies allowed us to consider the process of interaction of the fluid flow with the sprinkler deflector and develop a generalized calculation method. The results obtained were used in the design of the nomenclature of sprinklers for wide-reach sprinklers.