Experimental visualization of the structure of rotating detonation waves in a disk-shaped combustor

Soma Nakagami, Ken Matsuoka, Jiro Kasahara, Yoshiki Kumazawa, Jumpei Fujii, Akiko Matsuo, Ikkoh Funaki

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The rotating detonation engine is a propulsion system that obtains thrust using continuously existing detonation waves. A rotating detonation combustor usually has an annular shape that allows detonation waves to propagate in the circumferential direction. In this study, we used a disk-shaped rotating detonation combustor with a combustion chamber with flat-plane glass walls toobserve the structure of the phenomena. Self-luminescence, shadowgraphs, and schlieren visualization experiments were performed and compared. Results revealed that detonation waves were propagating in a mixture layer of three gases, fuel, oxidizer, and burned gas at 1600 to 900 m/s; Chapman-Jouguet velocity was 2376 m/s. Waves maintained a three-dimensional complicated wave shape in the disk-shaped combustion chamber with parallel-jet injectors.

Original languageEnglish
Pages (from-to)80-88
Number of pages9
JournalJournal of Propulsion and Power
Volume33
Issue number1
DOIs
Publication statusPublished - 2017

ASJC Scopus subject areas

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

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