A swirling jet under the influence of a coaxial flow

被引：32
|
作者：
Giannadakis, A. [1 ]
Perrakis, K. [1 ]
Panidis, Th. [1 ]
机构：
[1] Univ Patras, Dept Aeronaut & Mech Engn, Lab Appl Thermodynam, GR-26110 Patras, Greece
来源：
EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2008年 / 32卷 / 08期
关键词：
swirling jets; coaxial flow; vortex breakdown; DPIV;
D O I：
10.1016/j.expthermflusci.2008.04.010
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The recirculating flow field generated by a swirling jet and a coaxial annular stream entering a pipe is investigated with the use of 2D-DPIV. Parametric change of inlet flow rates (constant tangential injection with change of annular flow and vice versa) is being considered in order to study the mean and turbulent flow field. A recirculation bubble stabilized close to the swirler exit is the dominating feature of the interaction between the inner swirling jet and the annular stream. Results are discussed in terms of bubble topology and dynamics on the basis of a modified Rossby number that appears to describe the trends of the complex flow field. (C) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码：1548 / 1563
页数：16
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