Abstract

We present a resonant liquid capillary wave theory which extends Taylor's dispersion relation to include the effect of surface inclination caused by air flow. Also reported are new experimental results on effects of surface tension and air velocity on drop-size distributions in comparison to the theoretical predictions. Good agreements between the theoretical predictions and the experimental results led to the conclusion that Taylor-mode breakup plays a very important role in two-fluid atomization. Further, this ultrasound-controlled breakup provides a means for controlling the drop size and size distribution in two-fluid atomization which has a variety of applications in fuel combustion, spray drying, and spray coating.

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