A Numerical Study of an Atomizing Jet in a Resonant Acoustic Field

Michael Kuhn, Olivier Desjardins

Research output: Contribution to journalArticlepeer-review

1 Scopus Citations

Abstract

By applying state-of-the-art, high-fidelity methods for compressible multiphase flows, this work features a parametric study of a turbulent liquid jet atomizing under the influence of standing acoustic waves with five different amplitude values. We perform these simulations in a semi-periodic domain to isolate interactions between acoustic and atomization processes and to emulate a pure liquid fuel spray placed at the pressure node of a resonant acoustic field. Characterization of the flow includes measurements of the mean dimensions, droplet number, and surface area of the liquid distribution, alongside qualitative depictions of the interface evolution, breakup events, and hydrodynamic fields. As acoustic forcing is provided to the flow, the added energy provokes atomization when shear would otherwise be insufficient for breakup. The magnitude of the forcing determines the rate of droplet production, which accelerates as the evolving liquid surface modifies the induced motion of the gas phase. At the nodal plane, the acoustic field produces an organizing effect on the liquid structures.

Original languageAmerican English
Article numberArticle No. 104522
Number of pages12
JournalInternational Journal of Multiphase Flow
Volume167
DOIs
StatePublished - Oct 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

NREL Publication Number

  • NREL/JA-5000-84978

Keywords

  • Acoustic forcing
  • Atomization
  • Turbulent liquid jet

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