On the influence of initial parameters on subharmonic resonance in an axisymmetric jet

C. O. Paschereit; H. E. Fiedler; Israel J Wygnanski

doi:10.1007/978-94-011-2098-2_11

On the influence of initial parameters on subharmonic resonance in an axisymmetric jet

C. O. Paschereit, H. E. Fiedler, Israel J Wygnanski

Aerospace and Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Hot wire measurements in an axisymmetric jet are presented. A resonant subharmonic interaction between the two axisymmetric travelling waves was induced in the shear layer of the jet by controlled sinusoidal perturbations with two frequencies separated by one octave. The phase averaging technique was applied to assess the evolution of the coherent waves. By Fourier decomposing the phase averaged data it was possible to obtain the magnitude as well as the phase of the measured signal. In agreement with theory (Cohen & Wygnanski 1987, Michalke 1984) it was found that wherever the excited waves are non-dispersive they may interact in a manner that enhances the amplification rate of the subharmonic wave. (from Authors)

Original language	English (US)
Pages (from-to)	115-123
Number of pages	9
Journal	[No source information available]
DOIs	https://doi.org/10.1007/978-94-011-2098-2_11
State	Published - 1993

ASJC Scopus subject areas

General Engineering

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10.1007/978-94-011-2098-2_11

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title = "On the influence of initial parameters on subharmonic resonance in an axisymmetric jet",

abstract = "Hot wire measurements in an axisymmetric jet are presented. A resonant subharmonic interaction between the two axisymmetric travelling waves was induced in the shear layer of the jet by controlled sinusoidal perturbations with two frequencies separated by one octave. The phase averaging technique was applied to assess the evolution of the coherent waves. By Fourier decomposing the phase averaged data it was possible to obtain the magnitude as well as the phase of the measured signal. In agreement with theory (Cohen & Wygnanski 1987, Michalke 1984) it was found that wherever the excited waves are non-dispersive they may interact in a manner that enhances the amplification rate of the subharmonic wave. (from Authors)",

author = "Paschereit, {C. O.} and Fiedler, {H. E.} and Wygnanski, {Israel J}",

year = "1993",

doi = "10.1007/978-94-011-2098-2_11",

language = "English (US)",

pages = "115--123",

journal = "[No source information available]",

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TY - JOUR

T1 - On the influence of initial parameters on subharmonic resonance in an axisymmetric jet

AU - Paschereit, C. O.

AU - Fiedler, H. E.

AU - Wygnanski, Israel J

PY - 1993

Y1 - 1993

N2 - Hot wire measurements in an axisymmetric jet are presented. A resonant subharmonic interaction between the two axisymmetric travelling waves was induced in the shear layer of the jet by controlled sinusoidal perturbations with two frequencies separated by one octave. The phase averaging technique was applied to assess the evolution of the coherent waves. By Fourier decomposing the phase averaged data it was possible to obtain the magnitude as well as the phase of the measured signal. In agreement with theory (Cohen & Wygnanski 1987, Michalke 1984) it was found that wherever the excited waves are non-dispersive they may interact in a manner that enhances the amplification rate of the subharmonic wave. (from Authors)

AB - Hot wire measurements in an axisymmetric jet are presented. A resonant subharmonic interaction between the two axisymmetric travelling waves was induced in the shear layer of the jet by controlled sinusoidal perturbations with two frequencies separated by one octave. The phase averaging technique was applied to assess the evolution of the coherent waves. By Fourier decomposing the phase averaged data it was possible to obtain the magnitude as well as the phase of the measured signal. In agreement with theory (Cohen & Wygnanski 1987, Michalke 1984) it was found that wherever the excited waves are non-dispersive they may interact in a manner that enhances the amplification rate of the subharmonic wave. (from Authors)

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U2 - 10.1007/978-94-011-2098-2_11

DO - 10.1007/978-94-011-2098-2_11

M3 - Article

SP - 115

EP - 123

JO - [No source information available]

JF - [No source information available]

ER -

On the influence of initial parameters on subharmonic resonance in an axisymmetric jet

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