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Dynamic Measurement of Liquid Sheet Formed by Impinging Jets via Partial Coherent Interferometry

[+] Author Affiliations
Weixiao Shang, Jun Chen

Purdue University, West Lafayette, IN

Paper No. FEDSM2018-83465, pp. V002T14A014; 7 pages
  • ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting
  • Volume 2: Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation; Cavitation and Phase Change
  • Montreal, Quebec, Canada, July 15–20, 2018
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5156-2
  • Copyright © 2018 by ASME


In this work, the thicknesses of impinging liquid sheets formed by two alike impinging jets with different flow rates are investigated via a non-intrusive measurement technique, the Partial Coherent Interferometry. The Reynolds number and Weber number are 720 to 780 and 120 to 150, respectively. An interferometer with the calibrated partial coherence property is used to record the interference pattern by passing one branch of the two optical paths through the impinging sheet. By examining the phase and the degree of coherence of the pattern, the absolute thickness distribution of the impinging sheet is measured. The thicknesses with different experimental conditions are compared to the previous theoretical models and the influences of the flow rate and impinging angle are concluded.

Copyright © 2018 by ASME
Topics: Interferometry , Jets



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