Dimensional analysis-based head loss calculation for the micro-pressure filtering and washing tank

Abstract Filtering is an important measure for the prevention of emitter clogging in micro-irrigation systems. Head loss and energy consumption are two problems pressurized irrigation Therefore, a combined filtration device – micro-pressure filtering washing tank was designed. In this study, taken as research object, physical model test inlet flow sediment concentration carried out. The head prediction under clean water muddy conditions established by dimensional multiple regression analyses, determination coefficients (R2) were 0.987 0.953, respectively. addition, data used to validate water. average relative error predicted values 3.36%, suggesting that proposed models ideal prediction. results can provide technical support structure optimization mechanism tank, enrich theory filtration.