Supersonic combustion induced by reflective shuttling shock wave in fan-shaped two-dimensional combustor

Masato Yamaguchi, Ken Matsuoka, Akira Kawasaki, Jiro Kasahara, Hiroaki Watanabe, Akiko Matsuo

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

As a novel detonation combustor that differs from a pulse and a rotating detonation engine, a reflective shuttling detonation combustor (RSDC), in which detonation waves shuttle repeatedly, was proposed. In a fan-shaped two-dimensional combustor, detonation waves propagate, repeating attenuation and re-ignition by a shock reflection at the side wall. In the demonstration experiment, chemiluminescence visualization and pressure measurement with ethylene-oxygen mixture were conducted at the same time. As the result, a single shuttling wave coupled with pressure rise was observed in the combustor. The tangential velocity of the wave was 1526 ± 12 m/s and approximately 60% of the estimated Chapman-Jouguet velocity of 2513 m/s. The ratio of pressure in front of the wave to one behind the primary wave or the reflected wave was in good agreement with one-dimensional shock theory, and it was suggested that the rapid reaction behind the reflected shock wave sustained the continuous propagation of the shock wave.

Original languageEnglish
Pages (from-to)3741-3747
Number of pages7
JournalProceedings of the Combustion Institute
Volume37
Issue number3
DOIs
Publication statusPublished - 2019

Keywords

  • Reflected shock wave
  • Reflective shuttling detonation combustor
  • Shock induced combustion

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

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