Investigation of fluid motion in valveless pulse detonation combustor with high-frequency operation

Ken Matsuoka, Kohei Muto, Jiro Kasahara, Hiroaki Watanabe, Akiko Matsuo, Takuma Endo

Research output: Contribution to journalArticle

9 Citations (Scopus)


The fluid motion of a fluid in a valveless pulse detonation combustor (PDC), in which the inner diameter of the oxidizer feed line is equivalent to the combustor was studied. O2 was utilized as an oxidizer and injected into the PDC in the valveless mode. In contrast, supercritical ethylene was utilized as fuel and supplied to the PDC perpendicular to its axis through suitable timing, and a detonable mixture was made by combining with O2. The flame propagation speed and burned-gas backflow were measured via 12 ion probes installed on the side wall. Experimental results were compared to one-dimensional numerical calculations and found to be in good agreement. Also, shortening of the burned-gas backflow process was vital to achieve a higher operating frequency.

Original languageEnglish
Pages (from-to)2641-2647
Number of pages7
JournalProceedings of the Combustion Institute
Issue number2
Publication statusPublished - 2016



  • High-frequency operation
  • PDC
  • Pulse detonation combustor
  • Valveless

ASJC Scopus subject areas

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

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