Instability of liquid jets in weak gaseous crossflow

Abstract eng:
Development in spray technology requires more basic understanding on primary breakup mechanism. Insight concerning this issue can be gained by studying the properties of waves that appear on the surface of the jet during the breakup process. In an effort to elucidate the primary breakup of liquid jets injected transversely into a gaseous flow, a three-dimensional temporal linear stability analysis is developed. A characteristic equation accounting for the growth of columnar waves is obtained and the instability dynamics is parametrically investigated in the presence of capillary, viscous, and aerodynamic forces.

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