Abstract
The scalar concentration field of the round jet in a uniform crossflow is studied for a range of jet to crossflow velocity ratios, r, with emphasis on r = 10 and 20, using planar laser-induced fluorescence (PLIF) of acetone. For a top-hat jet exit velocity profile, the emerging presence of jet fluid in the wake structures is seen for for r > 10. The near-field region is characterized by a centerline concentration decay of s −1.3, an improvement over the mixing rate s −1 of the free jet. The far-field is marked by a branching away from the s −1.3 decay and approaching a decay of s −2/3 a rate derived from modelling efforts. When normalized by r 2 d, the branch points occur at a uniform jet position, x/r 2 d ~ 0.2. The view of the branch points as points of transition in the flow is reinforced by the probability density function (pdf) results along the upper edge of the jet.KeywordsBranch PointHorseshoe VortexPlanar Laser Induce FluorescenceWake StructureHorseshoe Vortex SystemThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
