Flow Visualization of a Rotating Detonation Engine
Technical Report,05 Sep 2014,04 Dec 2015
TOKAI UNIVERSITY HIRATSUKA Japan
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The rotating detonation engine RDE is a propulsion system that obtains thrust using continuously existing detonation waves. A rotating detonation combustor RDC usually has an annular shape that allows detonation waves to propagate in the circumferential direction. In this study, we used a disk-shaped RDC 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 3 gases, fuel, oxidizer and burned gas at 1,600 to 900 ms CJ velocity was 2,376ms. Waves maintained a three-dimensional complicated wave shape in the disk-shaped combustion chamber with parallel-jet injectors.
- Combustion and Ignition