Abstract
A two-phase analysis of air and fuel flow through a swirl injector was performed by using a volume of fluid (VOF) model. This model makes it possible to calculate the cavity that is formed at the exit of the nozzle, thereby facilitating calculation of the liquid film thickness which strongly influences fuel atomization. The calculated results were compared with experimental data for fully developed spray characteristics, including the flow coefficient, cone angle and cavity factor. Moreover, the initial spray development process was also calculated. The calculated results were compared with visualizations of the initial spray development process. They showed relatively good agreement with the experimental data.
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