Prediction of Combustion Instability with Detailed Chemical Kinetics
Technical paper Dec 2014-Jan 2015
AIR FORCE RESEARCH LAB EDWARDS AFB CA AEROSPACE SYSTEMS DIRECTORATE
Pagination or Media Count:
Combustion instability in an unstable single element rocket chamber using methane as the fuel is computationally studied. Effects of the kinetics mechanism are examined by comparing the results using a single step global mechanism and a detailed mechanism with 32 species and 177 reactions. Significant differences between the two predictions are identified including the amplitude of the unsteady pressure oscillations, and more importantly, the underlying mechanisms responsible for driving the combustion instabilities.
- Combustion and Ignition