A quasi-one-dimensional analytic model of rotating detonation combustors

Rei Kawashima, Ikkoh Funaki, Jumpei Fujii, Akiko Matsuo, Kazuki Ishihara, Jiro Kasahara

Research output: Contribution to journalArticlepeer-review


A quasi-one-dimensional analytic model is proposed for the internal uid of rotating detonation combustors (RDCs). This model uses the shock-tube model that constrains the ow to have only a longitudinal component, while admitting the propagation of the detonation wave in the azimuthal direction. The proposed model is able to compute the thruster performance and two-dimensional distributions of gas properties. The calculation process of the model excludes iterative calculation or space discretization. The case calculations of the hydrogen-air RDC and the ethylene-oxygen RDC are conducted, and the results calculated by the analytic model are compared with those simulated by computational uid dynamics (CFD). Good agreement has been observed between the results obtained with the proposed model and CFD, in terms of both of the qualitative and quantitative comparisons. The proposed model is simple and fast, and also maintains the fundamental characteristics of RDCs.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2017 Dec 7

ASJC Scopus subject areas

  • General

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