Experimental Visualization of the Structure of Rotating Detonation Waves in a Disk-Shaped Combustor

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 rotati...

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Published in:Journal of propulsion and power 2017-01, Vol.33 (1), p.80-88
Main Authors: Nakagami, Soma, Matsuoka, Ken, Kasahara, Jiro, Kumazawa, Yoshiki, Fujii, Jumpei, Matsuo, Akiko, Funaki, Ikkoh
Format: Article
Language:English
Subjects:
Combustion
Combustion chambers
Detonation
Detonation waves
Oxidizers
Oxidizing agents
Propulsion
Propulsion systems
Rotating disks
Rotation
Shadowgraph photography
Visualization
Wave propagation
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cited_by cdi_FETCH-LOGICAL-a456t-d33b1d92da3d94c70c13a452e367e8bfa784c275a70b6011f71571360632aa593
cites cdi_FETCH-LOGICAL-a456t-d33b1d92da3d94c70c13a452e367e8bfa784c275a70b6011f71571360632aa593
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container_title Journal of propulsion and power
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creator Nakagami, Soma
Matsuoka, Ken
Kasahara, Jiro
Kumazawa, Yoshiki
Fujii, Jumpei
Matsuo, Akiko
Funaki, Ikkoh
description 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 to observe 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.
doi_str_mv 10.2514/1.B36084
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subjects Combustion
Combustion chambers
Detonation
Detonation waves
Oxidizers
Oxidizing agents
Propulsion
Propulsion systems
Rotating disks
Rotation
Shadowgraph photography
Visualization
Wave propagation
title Experimental Visualization of the Structure of Rotating Detonation Waves in a Disk-Shaped Combustor
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