Characteristics of hydrogen jets in supersonic crossflow: Large-eddy simulation study

Junya Watanabe, Toshinori Kouchi, Kenichi Takita, Goro Masuya

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The characteristics of hydrogen jets transversely injected into a supersonic crossflow under four different injection and crossflow conditions were investigated by large-eddy simulation. The effects of the jet-to-crossflow momentum flux ratio and crossflow velocity were studied. The jet trajectory in the averaged field was controlled by the value of the square root of the jet-to-crossflow momentum flux ratio irrespective of the crossflow conditions. When the crossflow conditions were fixed many jet characteristics were similar in the space normalized using the square root of jet-tocrossflow momentum flux ratio. On the other hand, the crossflow conditions had a strong impact on the jet characteristics. Although the turbulent intensity around the jet was not affected to a great extent, the shape and convection velocity of the large-scale structures appearing on the windward side of the jet plume depended on the crossflow conditions. With a higher crossflow velocity the convection velocity was higher, the jet was more intermittent, and the progress of mixing was slower. The turbulent mixing state had different features depending on the crossflow conditions.

Original languageEnglish
Pages (from-to)661-674
Number of pages14
JournalJournal of Propulsion and Power
Volume29
Issue number3
DOIs
Publication statusPublished - May 2013
Externally publishedYes

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ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science
  • Fuel Technology
  • Mechanical Engineering

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