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

页码：845 / 854

页数：10

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