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The present study aims to investigate the role of injector geometry,particularly injector tube length to diameter ratio (L/D) in liquid jetstability and breakup in presence of crossflow. Water is injected into acrossflow of air. Aerodynamic Weber number (We) and liquid Reynolds number(Rel) are systematically varied to observe various breakup modes. Bag breakupand surface stripping is observed for different operating conditions.Time-resolved jet trajectory images are processed using Proper OrthogonalDecomposition (POD) algorithm. POD mode shapes and corresponding Power SpectralDensity (PSD) plots are analyzed to study breakup process and probe role ofinjector geometry effects. Further, high-resolution images are captured for thenear-nozzle region. Detailed comparison is made for various cases. It isobserved that with increase in (L/D), the jet surface becomes more turbulentand unstable. This results in early breakup and lower jet penetration

Effect of Injector Geometry in Breakup of Liquid Jet in Crossflow Insights from POD