Numerical investigation on characteristic lengths for gaseous detonation with dilute water spray

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

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Two-dimensional (2D) numerical simulations based on Eulerian-Lagrangian method are conducted to clarify the droplet behavior within its lifetime within the detonation cell. The simulation results are analyzed via 2D instantaneous flow fields and Favre spatiotemporal average technique, by applying the recycling block method. Gaseous detonation with dilute water droplets (WDs) propagates stably with a 4% velocity decrease compared to dry CJ velocity in the simulation conditions. From the instantaneous flow field analysis, the droplet breakup occurs primarily in jets, downstream of the transverse wave, nearby the collision of transverse waves, and the interaction between the transverse wave and the jets. The Favre average one-dimensional profiles by grouping WDs based on the initial shock strength that WDs experience reveal the droplet life inside the cellular structure. The mean equilibrium diameter after the breakup is not affected by the initial shock strength.

本文言語English
ホスト出版物のタイトルAIAA Propulsion and Energy Forum and Exposition, 2019
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9781624105906
DOI
出版ステータスPublished - 2019
イベントAIAA Propulsion and Energy Forum and Exposition, 2019 - Indianapolis, United States
継続期間: 2019 8月 192019 8月 22

出版物シリーズ

名前AIAA Propulsion and Energy Forum and Exposition, 2019

Conference

ConferenceAIAA Propulsion and Energy Forum and Exposition, 2019
国/地域United States
CityIndianapolis
Period19/8/1919/8/22

ASJC Scopus subject areas

  • エネルギー一般
  • 航空宇宙工学
  • 電子工学および電気工学
  • 制御およびシステム工学
  • 機械工学

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