Theory of breakup of pesticide drops in turbulent flow during plant spraying

Abstract

Quality of breakup of drops of pesticide solutions during crop spraying is of more critical importance compared to other factors, as it may considerably mitigate technogenic impact on the environment and, in general, contributes to significant reduction in use of the respective preparations without compromising the quality of technological process. The article analyses theoretical studies on breakup of drops of pesticide solutions in turbulent flow of two-phase media and presents a possible solution of analytical problem at various parameter values of pesticide solutions and turbulent air flow with consideration of mass transfer between small and large drops. Moreover, possible evaporation and condensation of solution drops are also taken into account. The resulting analytic dependencies allow describing the process of breakup of liquid by gas during crop spraying and determining the equivalent diameter of pesticide drops.