Evaluation of Steadiness and Drop Size Distribution in Sprays Generated by Different Twin-Fluid Atomizers

Abstract

Abstract. Twin-fluid atomizers underwent a significant development during the last few decades. They are common in many industrial applications such as fuel spraying, melt atomization and food processing. This paper is focused on the evaluation of four different twin-fluid atomizers. The aim is to compare the quality of sprays generated by various atomizers with similar dimensions and in the same operating regimes. A phaseDoppler anemometry (PDA) and particle image velocimetry (PIV) were used to measure spray characteristics such as velocity and size of the droplets. Measured data were used to compare droplet size distribution and to evaluate steadiness of the spray. Visualisations were made to support measured data and to clarify the principles of primary atomization and its influence on the spray.

Investigation of Fuel Atomization with Density Functions

“…Note that the measurement area refers to a horizontal section of the spray and the measurement points lie on an investigated diameter. The limiting factors at a single measurement point were the acquisition of 20,000 samples or 15 s passed, based on previous investigations [22,23]. The use of the time limit was required at the spray periphery.…”