Improved Kinetic Models for High-Speed Combustion Simulation
Final rept. 18 May 2006-18 Jun 2008
REACTION ENGINEERING INTERNATIONAL SALT LAKE CITY UT
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Report developed under an STTR contract. The overall goal of this STTR project has been to improve the realism of chemical kinetics in computational fluid dynamics modeling of hydrocarbon-fueled scramjet combustors. A new, pressure-dependent detailed chemical kinetic model for a JP-8 surrogate has been created. Extinction strain rate measurements have been performed with an opposed-jet burner at subatmospheric conditions for a variety of fuels, namely methane, ethylene, n-heptane, Jet A, n-decane, trimethylbenzene, and blends of n-decane and trimethylbenzene. Skeletal and quasi-steady-state QSS reduced mechanisms have been created based on the new mechanism and mechanisms from the literature for ethylene, JP-8, and n-decane. Parallel strategies for the in situ adaptive tabulation ISAT algorithm have been implemented and tested. Reduced mechanisms and ISAT have been demonstrated in the CFD and VULCAN CFD codes.
- Fluid Mechanics
- Combustion and Ignition
- Jet and Gas Turbine Engines