Spray Structure in Near-injector Region of Aerated Jet in Subsonic Crossflow (postprint)

Spray Structure in Near-injector Region of Aerated Jet in Subsonic Crossflow (postprint)

Response of Spray Formed by Liquid Jet Injected into Oscillating Air Crossflow

Experimental results on the characteristics of near-field (up to x/D=8) spray formed by a liquid jet injected into an oscillating air crossflow are presented. The modulation frequency is varied from 90 Hz to 450 Hz and the crossflow velocity (25-100 m/sec) and ambient pressure (2-3 atm) are systematically changed to investigate the spray response to modulated crossflow velocity over a range of ...

Detailed Numerical Simulations of the Primary Atomization of a Turbulent Liquid Jet in Crossflow

This paper presents numerical simulation results of the primary atomization of a turbulent liquid jet injected into a gaseous crossflow. Simulations are performed using the balanced force refined level set grid method. The phase interface during the initial breakup phase is tracked by a level set method on a separate refined grid. A balanced force finite volume algorithm together with an interf...

Afrl-rq-wp-tp-2014-0113 Exploration of Near-field Plume Properties for Aerated-liquid Jets Using X-ray Radiography (postprint)

Near-field structures of nominally axisymmetric aerated-liquid jets discharged from specially contoured exit adaptors were explored, using the plume properties derived from synchrotron X-ray radiography measurements. A total of six adaptors with various internal configurations and lengths were selected for testing. Water and nitrogen were used as the injectant and aerating gas, respectively. It...

Static Pressure Distribution in an Excited Jet: Some Observations (RESEARCH NOTE)

A plane subsonic jet was subjected to periodic oscillations in the near nozzle region by a twin vane system. During excitation, the jet was found to spread significantly and entrain mass much more than its steady counterpart. Time averaged static pressure measured in the flow field with a disc probe exhibited prominent well defined suction regions different from that of a steady jet.