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Large eddy simulation of spark ignition in a turbulent methane jet

By G Lacaze, E.S. Richardson and T Poinsot

Abstract

Large eddy simulation (LES) is used to compute the spark ignition in a turbulent methane jet ?owing into air. Full ignition sequences are calculated for a series of ignition locations using a one-step chemical scheme for methane combustion coupled with the thickened ?ame model. The spark ignition is modeled in the LES as an energy deposition term added to the energy equation. Flame kernel formation, the progress and topology of the ?ame propagating upstream, and stabilization as a tubular edge ?ame are analyzed in detail and compared to experimental data for a range of ignition parameters. In addition to ignition simulations, statistical analysis of nonreacting LES solutions is carried out to discuss the ignition probability map established experimentally

Topics: TA
Year: 2009
OAI identifier: oai:eprints.soton.ac.uk:191035
Provided by: e-Prints Soton
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