Self-similar pressure-atomized sprays

Hannes Hinterbichler*, Helfried Steiner, Günter Brenn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Sprays produced by pressure atomization of various liquids are investigated experimentally, showing the self-similar flow fields of both the liquid and the gas phases. Phase-Doppler measurements are conducted in the sprays at varying radial and axial distances from the atomizer orifice. The theoretical description of the gas flow field based on boundary-layer theory reveals a self-similar velocity field driven by momentum transfer from the liquid phase ejected into the gaseous environment. The momentum loss of the liquid droplet phase is also found to be self-similar, which was to be expected, but not shown in the literature before. The analytical self-similar description of the two-phase flow field is in excellent agreement with the experimental data.
Original languageEnglish
Article numberA17
Pages (from-to)A17-1 - A17-25
JournalJournal of Fluid Mechanics
Publication statusPublished - 2020


  • aerosols/atomization
  • drops
  • multiphase flow

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fields of Expertise

  • Human- & Biotechnology


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