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 journalArticle

1 Citation (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
JournalProceedings of the Combustion Institute
DOIs
Publication statusAccepted/In press - 2018 Jan 1

Fingerprint

supersonic combustion
combustion chambers
Combustors
fans
Shock waves
Fans
shock waves
detonation
Detonation
detonation waves
shock
chemiluminescence
reflected waves
pressure measurement
ignition
engines
ethylene
attenuation
Chemiluminescence
Pressure measurement

Keywords

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

ASJC Scopus subject areas

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

Cite this

Supersonic combustion induced by reflective shuttling shock wave in fan-shaped two-dimensional combustor. / Yamaguchi, Masato; Matsuoka, Ken; Kawasaki, Akira; Kasahara, Jiro; Watanabe, Hiroaki; Matsuo, Akiko.

In: Proceedings of the Combustion Institute, 01.01.2018.

Research output: Contribution to journalArticle

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AU - Kawasaki, Akira

AU - Kasahara, Jiro

AU - Watanabe, Hiroaki

AU - Matsuo, Akiko

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N2 - 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.

AB - 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.

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