斜爆轰发动机燃烧机理试验研究

Translated title of the contribution: Experimental Research on Combustion Mechanism of Oblique Detonation Engines

Zi Jian Zhang, Xin Han, Kai Fu Ma, Wen Shuo Zhang, Yun Feng Liu, Chao Kai Yuan, Zong Lin Jiang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Numerical simulations and experiments of a Ma 9 oblique detonation engine were conducted to study the combustion mechanism of oblique detonation engines. Firstly, a full-scale engine model with a length of 2.8m was designed. The engine inlet is a two-stage compression inlet composed of two 15°-inclined ramps. The hydrogen is pre-injected into the main flow at the leading front of the inlet by three strut-injectors. Secondly, the mixing process at the inlet and the combustion process in the combustor were numerically simulated. In the numerical simulations, the governing equations are Reynolds average Navier-Stokes equations with SST k-ω turbulence model and 9-species and 19-recations detailed chemical reaction kinetics. The numerical results show that the mixing process of hydrogen along the inlet is good. The stable oblique detonation waves and normal detonation waves are obtained in the combustor. Finally, the experiments under Ma 9 flight conditions were conducted in the shock tunnel. The stable flow fields of oblique detonation engine were established in the duration of 50ms test time of the shock tunnel. The experimental results are in good agreements with numerical results which means that stable oblique detonation waves were successfully obtained in the shock tunnel experiments. This research results demonstrate the technical feasibility of oblique detonation engines.

Translated title of the contributionExperimental Research on Combustion Mechanism of Oblique Detonation Engines
Original languageChinese (Simplified)
Pages (from-to)786-794
Number of pages9
JournalTuijin Jishu/Journal of Propulsion Technology
Volume42
Issue number4
DOIs
Publication statusPublished - Apr 2021
Externally publishedYes

Keywords

  • Oblique detonation engines
  • Oblique detonation wave
  • Oblique shock wave
  • Shock-induced combustion
  • Supersonic combustion

ASJC Scopus subject areas

  • Aerospace Engineering

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