A Calculation of Spray Parameters of Pressure-Swirl Atomizer

Based on the results of the linear stability analysis and the experimental correlation of conical liquid sheet break-up length of pressure-swirl atomizer,combined with the structure parameters of pressure-swirl atomizer and simplified flow model,the depth h_b of the conical liquid sheet at the point of break-up can be obtained through calculation,then Sauter mean diameter SMD can be determined from h_b.The results by this method agree well with experiments and Jasuja's relative experimental correlation.The calculating method in this paper can be used to pre-estimate spray parameters of pressure-swirl atomizer.