期刊
FLOW TURBULENCE AND COMBUSTION
卷 80, 期 1, 页码 47-59出版社
SPRINGER
DOI: 10.1007/s10494-007-9121-3
关键词
large eddy simulation; mixing; coherent structures; swirl flows; jets
The paper presents large eddy simulations of co-annular swirling jets into an open domain. In each of the annuli a passive scalar is introduced and its transport is computed. If the exit of the pilot jet is retracted strong coherent flow structures are generated which substantially impact on the transport and mixing of the scalars. Average and instantaneous fields are discussed to address this issue. A conditional averaging technique is devised and applied to velocity and scalars. This allows to quantify the impact of the coherent structures on the mixing process.
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