Numerical analysis on behavior of dilute water droplets in detonation

Hiroaki Watanabe, Akiko Matsuo, Ashwin Chinnayya, Ken Matsuoka, Akira Kawasaki, Jiro Kasahara

研究成果: Conference article査読

8 被引用数 (Scopus)


Two-dimensional numerical simulations are conducted based on the Eulerian-Lagrangian method to model a gaseous detonation laden with monodispersed water droplets. The premixed mixture is a slightly diluted stoichiometric hydrogen oxygen mixture at low pressure. The outcome of the interactions of the droplet breakup with the cellular instabilities and the non-uniform flow behind the leading front is analyzed. The simulation results are also analyzed using instantaneous flow fields and Favre average profiles for water droplets. Breakup occurs mainly near the detonation front. The mean final diameter of the water droplets at the end of the breakup process is the same regardless of the initial strength of the leading shock or whether it is lower or greater than the Chapman-Jouguet value. The polydispersity comes from local phenomena behind the leading shock, such as forward jets coming from triple point collisions, transverse waves and a combination of both. The total breakup time is longer than that estimated from post-shock conditions and the present finding is in line with the previous experimental results on spray detonation.

ジャーナルProceedings of the Combustion Institute
出版ステータスPublished - 2021
イベント38th International Symposium on Combustion, 2021 - Adelaide, Australia
継続期間: 2021 1月 242021 1月 29

ASJC Scopus subject areas

  • 化学工学一般
  • 機械工学
  • 物理化学および理論化学


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