Jet column modes in both a plane jet and a passively modified plane jet subject to acoustic excitation

被引：11
|
作者：
Olsen, JF [1 ]
Rajagopalan, S
Antonia, RA
机构：
[1] Univ New S Wales, Sch Mech & Mfg Engn, Sydney, NSW 2052, Australia
[2] Univ Newcastle, Dept Mech Engn, Callaghan, NSW 2308, Australia
来源：
EXPERIMENTS IN FLUIDS | 2003年 / 35卷 / 03期
关键词：
D O I：
10.1007/s00348-003-0663-4
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Use is made of acoustic excitation to enhance the coherent vortical structures that form in both a plane jet and a passively modified plane jet. The Strouhal number for the preferred mode based on the nozzle height of the jet is found to be unaffected by the passive modification. The existence of the jet column mode of stable pairing in the excited plane jet is unambiguously confirmed. Measurements in the excited and modified plane jet show that the passive modification suppresses this mode. Finally, the work shows the existence of a new mode of stable pairing. Both time- and phase-averaged measurements are presented to examine this mode.
引用
收藏
页码：278 / 287
页数：10
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