Experiments on subharmonic resonance in a shear layer
1995 ◽
Vol 304
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pp. 343-372
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Keyword(s):
Hot Wire
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The subharmonic resonance phenomenon is studied using hot-wire measurements and flow visualization in an initially laminar shear layer forced with two-frequencies for various choices of the fundamental frequency f and its subharmonic f/2 with controlled initial phase difference ϕin between them. We explore the effects of the controlling parameters, namely: (i) forcing frequencies and their initial amplitudes, (ii) initial phase difference ϕin, and (iii) detuning (i.e. when the second forcing frequency is slightly different from f/2). While several of our experimental observations support predictions based on weakly nonlinear theory, others do not. We explain our data in terms of vortex dynamics concepts.
2004 ◽
Vol 14
(03)
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pp. 1115-1120
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2011 ◽
Vol 130-134
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pp. 2335-2339
Keyword(s):
1995 ◽
Vol 78
(7)
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pp. 79-89
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Keyword(s):
Keyword(s):
2001 ◽
Vol 11
(07)
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pp. 1897-1909
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2007 ◽
Vol 369
(5-6)
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pp. 418-431
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