The ignition process of a premixed reactive jet in hot vitiated crossflow
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Date
2019-05
Publication Type
Other Conference Item
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yes
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Abstract
The transient ignition process of a premixed methane-air jet that is injected into a hot vitiated cross-flow is investigated by means of LES with analytically reduced chemistry. Premixed reactive jet
in hot crossflow (RJICF) configurations are important for modern combustion systems for power applications. The ignition process occurs without external heat source and it is here investigated by comparing numerical simulations to experimental data (PIV and OH LIF). The LES gives access to the full spatio-temporal evolution of the reaction zone, and allows to identify regions governed by autoignition and by flame propagation. After the transient flame anchoring, the turbulent RJICF structure is also characterised. The reaction zone stretches over a wide range of mixture fractions from the most reactive one to the stoichiometry.
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published
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Book title
17th International Conference on Numerical Combustion. Book of Abstracts
Journal / series
Volume
Pages / Article No.
119 - 119
Publisher
RWTH Aachen University
Event
17th International Conference on Numerical Combustion (NC19)
Edition / version
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Software
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Date collected
Date created
Subject
Turbulent flames
Organisational unit
09471 - Noiray, Nicolas / Noiray, Nicolas
Notes
Conference lecture held on May 6, 2019.