On the sensitivity of a free annular swirling jet to the level of swirl and a pilot jet

被引：2
|
作者：
García-Villalba, M [1 ]
Fröhlich, J [1 ]
机构：
[1] Univ Karlsruhe, SFB 606, D-76128 Karlsruhe, Germany
来源：
Engineering Turbulence Modelling and Experiments 6 | 2005年
关键词：
swirling jets; annular jets; large eddy simulation; coherent structures; pilot jet;
D O I：
10.1016/B978-008044544-1/50081-9
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The paper presents large eddy simulation of unconfined swirling jets. In the first part, an unconfined annular jet is investigated for swirl numbers ranging from 0 to 1.2. The impact of the swirl on the mean flow and the precessing vortex structures in this flow is analysed. In the second part of the paper, a co-annular pilot jet is introduced near the axis. The investigations show that the additional swirl near the axis has a stronger effect than the pilot jet itself, leading to an almost entire removal of coherent structures.
引用
收藏
页码：845 / 854
页数：10
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