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Experimentally Derived Scaling Laws from Spatiotemporally Resolved Measurements in High-Pressure Combustors

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-17-C-2037
Agency Tracking Number: F16A-T15-0191
Amount: $749,677.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: AF16-AT15
Solicitation Number: 2016.0
Solicitation Year: 2016
Award Year: 2017
Award Start Date (Proposal Award Date): 2017-08-11
Award End Date (Contract End Date): 2019-11-15
Small Business Information
5100 Springfield Street
Dayton, OH 45431
United States
DUNS: 782766831
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: Yes
Principal Investigator
 Dr. Sukesh Roy
 (937) 902-6546
Business Contact
 Dr. SIvaram Gogineni
Phone: (937) 266-9570
Research Institution
 Purdue University
 Prof. Terrence Meyer
585 Purdue Mall
West Lafayette, IN 47907
United States

 (937) 286-5711
 Nonprofit College or University

The objectives of this research effort are to experimentally derive the scaling laws up to 30 bar for key combustion species and temperature for reactions involving various hydrocarbon fuels in such a way so that the spatio-temporally resolved measurements would not be influenced by signal-degrading processes such as quenching, photolytic interference, Stark shift, and stimulated Raman. This builds on successful Phase-I measurements of atomic species (e.g., O atom) and CO using two-photon laser-induced fluorescence (TPLIF) at high pressures for the first time. During the Phase-II effort we will focus on methodologies for achieving scaling laws for temperature and major species (e.g., (N2, O2, CO2, CH4, and C2H4) using hybrid fs/ps coherent anti-Stokes Raman scattering (fs/ps CARS). In addition, collision-free measurements of minor species (e.g., OH, CH, HCO, CH2O, and HO2) will be investigated at high pressure using electronic resonant enhanced (ERE) CARS. Finally, strategies for achieving quenching-free TPLIF measurements using short time gating and/or streak-camera detection will be investigated for atomic species (e.g., O and H atoms) and molecular species (e.g., CO). Experiments will be conducted in flat flames and strained flames at pressures up to 30 bar or even higher for developing pressure-scaling laws using finite-rate chemistry models.

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

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