Passive scalar mixing downstream of a synthetic jet in crossflow

被引：1

作者：

Mitchell, Glen ^{[1
]}

Benard, Emmanuel ^{[1
]}

Uruba, Vaclav ^{[2
]}

Cooper, Richard ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Mech & Aerosp Engn, Belfast, Antrim, North Ireland

[2] Acad Sci Czech Repub, Inst Thermomechan, Prague, Czech Republic

来源：

IUTAM SYMPOSIUM ON FLOW CONTROL AND MEMS | 2008年 / 7卷

关键词：

passive scalar mixing; synthetic jet; crossflow;

D O I：

10.1007/978-1-4020-6858-4_11

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

An experimental investigation on passive scalar mixing due to the interaction of a synthetic jet with a thermal boundary layer is presented. From velocity measurements, performed by particle image velocimetry, two jet behaviours were identified. For jet to crossflow velocity ratios less than 1.2, the velocity fluctuations due to the jet/crossflow interaction stayed close to the wall. At higher ratios, the fluctuations moved away from the wall. The thermal mixing was examined using laser induced fluorescence. During expulsion, the thickness of the downstream thermal boundary layer increased whilst the thermal boundary layer was annihilated immediately downstream of the jet during entrainment.

引用

页码：103 / +

页数：2

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