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Concurrent High-Fidelity Measurements and Simulations for Advancing the Design of Rotating Detonation Engines

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC19C0551
Agency Tracking Number: 194300
Amount: $124,827.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: T2
Solicitation Number: STTR_19_P1
Timeline
Solicitation Year: 2019
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-08-19
Award End Date (Contract End Date): 2020-09-18
Small Business Information
4065 Executive Dr.
Dayton, OH 45430-1062
United States
DUNS: 782766831
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: Yes
Principal Investigator
 Christopher Fugger
 (937) 256-7733
 chris.fugger@spectralenergies.com
Business Contact
 Sivaram Gogineni
Phone: (937) 266-9570
Email: goginesp@gmail.com
Research Institution
 Purdue University-Main Campus
 
155 South Grant Street
West Lafayette, IN 47907-2114
United States

 Federally funded R&D center (FFRDC)
Abstract

Rotating Detonation Engine (RDE) design is challenging due to the lack of in-depth understanding of many key mixing and combustion processes. The RDE flow field is a nonuniform mixture of fuel and oxidizer concentrations with strong injector effects, large turbulence effects, multiple shockwaves, and shear layers. These inhomogeneities can lead to significant combustion inefficiencies which have a pronounced effect on the performance. The proposed research effort will transition state-of-the-art, time-resolved measurement techniques to RDEs to provide new information critical for evaluating the predictive capability of high-fidelity numerical models. This will include ultra-high-speed (100 kHz ndash; 5 MHz) in-situ spatially and temporally resolved imaging of the oxidizer-fuel mixing (quantifying the mixing and local O/F ratio), back mixing of combustion products with fresh propellants, temperature, and species concentrations. This effort will leverage the recent advancements from MHz-rate pulse-burst laser technology for application in rocket RDE environments as well as RDE simulations to enable one-to-one comparison between measured and modeled quantities. The Phase 1 overall goals are twofold: (1) demonstrate a mixing measurement diagnostic in the linear RDE that achieves spatially and temporally resolved images of the fuel mixing and O/F measurements at rates of at least 100 kHz, (2) modeling of the RDE, moving towards anchoring simulations with measurement data. Simulations of an annular, optical RDE, undertaken during Phase 1, will guide the transition and development of additional measurement diagnostics on the annular RDE during Phase 2. The outcomes of the research effort will lead to the development of validated accurate computational tools that can be used for simulation of the laser-based signals, guide diagnostics development, and design RDE technologies.nbsp;

* Information listed above is at the time of submission. *

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