Active control of the jet in coaxial arrangement

被引：1
|
作者：
Brouckova, Z. [1 ,2 ]
Travnicek, Z. [1 ]
Safarik, P. [2 ]
机构：
[1] Inst Thermomech AS CR, Prague 18200, Czech Republic
[2] CTU, Fac Mech Engn, Prague 16607, Czech Republic
来源：
EFM12 - EXPERIMENTAL FLUID MECHANICS 2012 | 2013年 / 45卷
关键词：
HEAT-TRANSFER;
D O I：
10.1051/epjconf/20134501016
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
An axisymmetric jet flow, issuing as a fully developed flow from a long straight pipe at Re = 1600 and 5500, was actively controlled by an annular synthetic jet. The Pitot tube, hot-wire anemometry (CTA) and flow visualization were used for an experimental investigation of the flow control. The working fluid was air. The effect of varying Strouhal number (St = (0.18 divided by 1.94)) on a width and entrainment of the main jet flow was studied. It was found that the main jet is the most sensitive to the actuation at St = 0.28 divided by 0.60 and St = 0.18, for Re = 1600 and Re = 5500, respectively.
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页数：6
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