The breakup mechanism and atomization characteristics of lateral jet
LI Yuli
Abstract：In order to enhance the uniform of fuel and air mixing and improve the atomization effect of lateral jet,the current research status of lateral jet is analyzed,The discussion is carried out from two aspects:the breakup mode and the mechanism of surface formation,and the influencing factors of atomization.Moreover,the future research directions are prospected in view of the current research shortcomings.The results show that the breakup is determined by the ratio of liquid to gas momentum flux and the Weber number.The jet column is deformed by the combined action of Rayleigh-Taylor(RT)and Kelvin-Helmholtz(KH)instability form surface waves.The gas-liquid shear generates KH instability waves,causing the jet to mainly break up on the surface.The gas-liquid squeeze generates RT waves,causing the jet to mainly break up in a columnar manner.The liquid Weber number,the ratio of liquid to gas density,the injection angle of jet,the diameter and shape of the jet orifice,and the jet mode all have different effects on the atomization of droplets.However,it is to make a single qualitative evaluation,and specific situations need to be analyzed in combination.Future research on lateral jets should be improved as much as possible towards the combustion conditions of engines,while considering the impact of vortices,different pulse frequencies,and jet wave forms on lateral jets.
Keywords：lateral jetbreakup mechanismatomization characteristicssurface wave
Publication Date：2024-12-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 13-19 )