76th Annual Meeting of the APS Division of Fluid Dynamics (November 19, 2023 — November 21, 2023)

V0019: Visualization and Feature Tracking of the Atomization of Impinging Jets

  • Evan Pruitt, San Diego State University
  • William Markiewicz, San Diego State University
  • Carlos Gonzalez, San Diego State University
  • Xiaofeng Liu, San Diego State University
DOI: https://doi.org/10.1103/APS.DFD.2023.GFM.V0019

Impinging jets are a simple and common way of atomizing a spray and are commonly used in combustion applications.  The most famous case of the application of this technique was the use of an impinging jet injector in the Rocketdyne F-1 engine for the Saturn V moon rocket.  The atomization process created by the impinging jets is complex and contains rich dynamics.  Here, we present a detailed look at the breakup with a new set of visualization tools for identifying and analyzing the important features of the phenomenon.  These visualizations were made from images acquired at a speed of 20,000 frames per second at a shutter speed of 1/100000th of a second.  These new tools grant the ability to analyze many of the important features in the liquid sheet, ligaments, and droplets that are formed during the atomization process.  The addition of tracking also allows the monitoring of primary and secondary breakup events.  This tool presents an exciting new avenue for the further study of impinging jets atomization to grant a greater understanding of the important mechanisms at play.  Funding support from the DoD (Award number W911NF2110158) and the SDSU Master’s Research Scholarship are gratefully acknowledged.  For more information regarding our research projects, please visit our lab website at http://liu.sdsu.edu/, or contact the PI at Xiaofeng.Liu@sdsu.edu.

Music: Jeux d’eau (Ravel, Maurice) performed by María Cueva Méndez.  Copyright: Creative Commons Attribution 4.0

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