Effect of fuel injection scheme on rotating detonation engine operation

Conference · Sun Nov 19 04:00:00 EST 2017

OSTI ID:1808485

Chacon, Fabian ^[1]; Duvall, James; Gamba, Mirko

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1. University of Michigan

In this work, we experimentally in- vestigate the operation and performance characteristics of a rotating detonation engine (RDE) operated with different fuel injection schemes and operating conditions. In particular, we investigate the detonation and operation characteristics produced with an axial flow injector con- figuration and semi-impinging injector configurations. These are com- pared to the characteristics produced with a canonical radial injection system (AFRL injector). Each type produces a different flowfield and mixture distribution, leading to a different detonation initiation, injector dynamic response, and combustor pressure rise. By using a combination of diagnostics, we quantify the pressure loses and gains in the system, the ability to maintain detonation over a range of operating points, and the coupling between the detonation and the air/fuel feed lines. We par- ticularly focus on how this coupling affects both the stability and the performance of the detonation wave.

• Research Organization: University of Michigan
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• DOE Contract Number: FE0025315
• OSTI ID: 1808485
• Report Number(s): DOE-UMICH-FE0025315-001
• Country of Publication: United States
• Language: English