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Feature of Spray Transport and Atomization from Two-Phase Swirling Jet with Air-to-Liquid Mass Ratio  

Lee, Sam-Goo (Dept.of Mechanical Aerospace System Engineering, Chonbuk National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.8, no.2, 2004 , pp. 39-45 More about this Journal
Abstract
Experiments were performed in a two-phase swirling spray facility that has been described elsewhere. Measurements of spray transport and drop size distribution are analyzed over wide ranges of air to liquid mass flow ratios, utilizing four different internal mixing pneumatic nozzles. The spatial distributions of mean velocities. fluctuating velocities, and velocity-diameter correlation were quantitatively analyzed. Also, the exponential correlation curves were obtained with ALR along the spray centerline, which indicated an approximately identical formulation regardless of ALR. It indicated that the atomization characteristics were remarkably superior in the case of 30o of swirl angle with higher ALR. Among other things. nozzle configuration is one of the significant parameters affecting spray phenomena from an internal mixing nozzle. Turbulence intensities are increasingly degenerated with an increase of nozzle configuration, allowing a rapid increment of drop size distribution.
Keywords
Drop Size Distribution; fluctuating Velocity; ALR; Nozzle Configuration; SMD; PDPA;
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  • Reference
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