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Multi-Phase Flame Propagation Modeling for Present and Future Combustors and Augmentors

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-17-C-0402
Agency Tracking Number: N17A-002-0142
Amount: $124,998.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N17A-T002
Solicitation Number: 2017.0
Solicitation Year: 2017
Award Year: 2017
Award Start Date (Proposal Award Date): 2017-05-31
Award End Date (Contract End Date): 2017-12-27
Small Business Information
28632 Roadside Drive, #255
Agoura Hills, CA 91301
United States
DUNS: 879769180
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Jesse Capecelatro
 (845) 661-2336
Business Contact
 Sukumar Chakravarthy
Phone: (818) 735-4880
Research Institution
 University of Michigan
 Jeffrey Longe
 (734) 764-9118
 Federally Funded R&D Center (FFRDC)

The proposed project will develop advanced modeling capabilities for high-fidelity liquid-fuel spray calculations. State-of-the-art multiphase combustion models will be implemented in a volume-filtered Eulerian-Lagrangian framework that can easily be ported into existing CFD codes. Unlike traditional methods, the proposed strategy will ensure convergence under mesh refinement of the interphase exchange terms using a novel two-step filtering approach. The filtering process will remove any restriction on the fluid mesh size to droplet diameter ratio, thereby enabling the use of arbitrarily fine meshes for a given drop size distribution. Within this framework, liquid-phase combustion will be calibrated for the specific gas-phase combustion employed. A reduced-order model for evaporation will be developed using detailed single-droplet simulations. Rate parameters will be determined a-priori using gas-phase compositions obtained from prior CFD runs or canonical flows and stored in tabulated form, which can then be loaded into the main CFD run. The outcome of this work will demonstrate, for the first time, a robust and scalable approach capable of simultaneously handling the dense liquid regime near the injector and dilute regime downstream where ignition occurs.

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

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