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Atomization and Droplet Dispersion of Low-Momentum Water Jet by High-Speed Crossflow Air Stream

[+] Author Affiliations
Cuicui Liu, Zeyi Jiang, Xinxin Zhang

University of Science & Technology Beijing, Beijing, China

Huafei Liu, Shunhua Xiang

Baoshan Iron & Steel Co., Ltd., Shanghai, China

Paper No. IHTC14-22506, pp. 701-706; 6 pages
doi:10.1115/IHTC14-22506
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 6
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4941-5 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

In this paper, a low-momentum water liquid jet emanating transversely into a high-speed air stream is investigated analytically and numerically. Viscous instability followed by Rayleigh-Taylor instability is used in the jet breakup analysis to obtain the Sauter Mean Diameter and the droplet group velocity after the breakup. With the analytical results, droplet dispersion in the air stream is simulated by the coupled Eulerian-Lagrangian approach, in which the root-normal distribution is adopted to represent the droplet diameter distribution. Water flux distribution and spray angle are obtained and validated by experimental data. The results show that the air velocity is a dominant factor on the Sauter Mean Diameter and droplet group velocity in the water jet breakup process and the spray angle is influenced by the water mass flux.

Copyright © 2010 by ASME
Topics: Momentum , Water

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