G0501-2-4 プレフィルミングエアーブラストアトマイザの噴霧特性に関する研究(液滴,噴霧)

概要

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The spray characteristics of a pre-filming air-blast atomizer was experimentally investigated by using a two-dimensional test atomizer. The breakup pattern of a liquid film at the atomizer tip was classified from instantaneous photographs. Drop size distribution was measured by using a particle size analyzer based on Fraunhofer diffraction method. Flux of spray flow was also evaluated using an isokinetic sampling probe. We clarified the breakup pattern change of a liquid film from liquid lump breakup to liquid ligament breakup with the increase of air velocity. This change in breakup pattern decreases a mean droplet diameter, while the normalized span-wise liquid flux distribution hardly changes; the liquid flux has maximum value at the center and approximately 15 % lower at both sides of the atomizer.
2009-09-12