| Abstract
| - The present study focuses on understanding the pulsation characteristics of a spray generatedwith a feed nozzle commonly used in the petrochemical industry. A novel technique forcharacterizing the spray pulsation based on the data acquired using a phase-Doppler particleanalyzer (PDPA) is illustrated. Two-phase vertical sprays are generated using air and water atthree different air-to-liquid mass ratios. Visual observations using an imaging technique indicatedthe presence of pulsations. Using the PDPA data, an intermittency factor, γ, denoting the degreeof pulsation is defined. The mode of injection of the two phases and the effect of the carrier gason the spray pulsations and the droplet size−velocity characteristics are also investigated. Thepresent results indicate that the factor γ, coupled with the droplet size−velocity distribution,can be effectively used to characterize pulsating sprays.
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