Large-Eddy Simulation of a jet-in-hot-coflow burner pperating in the oxygen-diluted combustion regime
Date
2012
Authors
Ihme, M.
Zhang, J.
He, G.
Dally, B.
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Journal article
Citation
Flow, Turbulence and Combustion, 2012; 89(3):449-464
Statement of Responsibility
W. P. Jones, S. Lyra, S. Navarro-Martinez
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Abstract
The present paper discusses the Large Eddy Simulation of a confined non-reacting annular swirling jet. The configuration corresponds to a well investigated flow studied experimentally by Sheen (1993). The flow field is characterised by a high swirl number resulting in relatively complex features. The challenging behaviour of the flow is governed by the interaction of several recirculation zones. The central recirculation zone formed by the swirling jet is strongly affected by the cylindrical centre body which acts as a bluff body. The flow features coherent structures such as Precessing Vortex Cores (PVCs), which create regions with high velocity fluctuations. The simulations presented comprise a detailed investigation of the parameters controlling the inert flow and a thorough comparison with the experimental data.
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© Springer Science+Business Media B.V. 2012