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Preliminary Computational Assessment of Disk Rotating Detonation Engine ConfigurationsA rotating detonation engine (RDE) configuration whereby the working fluid enters and exits in a predominantly radial manner is examined using a quasi-two-dimensional computational fluid dynamic simulation. The simulation, based on a Cartesian coordinate system, was originally developed to examine the physics and performance of the more typical annular RDE. Modifications required to accommodate the radial and circumferential flowfield are discussed. The centripetal forces that arise in this disk RDE (DRDE) configuration create a different wave structure than that seen in the annular RDE. They also give rise to markedly different fluid behavior depending on whether the flow is radially inward or radially outward. Using an entropy-based measure of pressure gain, it is found that for the preliminary idealized calculations performed in this paper, the inward flowing DRDE outperforms the outward flowing variant. The inward flowing DRDE is further shown to outperform the equivalent annular RDE. The effects on performance of several parameters are examined, including inner-to-outer diameter ratio, inner-to-outer cross-sectional area ratio, and inlet throat-to-channel area ratio.
Document ID
Document Type
Conference Paper
External Source(s)
Paxson, Daniel E.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
January 13, 2020
Publication Date
January 6, 2020
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
AIAA 2020-2157
Meeting Information
Meeting: AIAA Scitech 2020 Forum
Location: Orlando, FL
Country: United States
Start Date: January 6, 2020
End Date: January 10, 2020
Sponsors: American Institute of Aeronautics and Astronautics (AIAA)
Funding Number(s)
WBS: 109492.
Distribution Limits
Work of the US Gov. Public Use Permitted.
Technical Review
NASA Peer Committee
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