Accession Number:

ADA488176

Title:

Improved Kinetic Models for High-Speed Combustion Simulation

Descriptive Note:

Final rept. 18 May 2006-18 Jun 2008

Corporate Author:

REACTION ENGINEERING INTERNATIONAL SALT LAKE CITY UT

Report Date:

2008-06-01

Pagination or Media Count:

161.0

Abstract:

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.

Subject Categories:

  • Fluid Mechanics
  • Combustion and Ignition
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE