An energy integral method analysis of preferred modes and the spreading rates of supersonic circular jets

Dehai Yu; Hongbin Gu; Peng Zhang

An energy integral method analysis of preferred modes and the spreading rates of supersonic circular jets

Dehai Yu, Hongbin Gu, Peng Zhang

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

Jet spreading plays a crucial role in process of fuel mixing in supersonic combustion. The jet preferred mode signifies the maximum spreading rate of the shear layer of jets under periodic excitation. In this paper, linear frequency response of compressible axisymmetric jets was analyzed based on an energy integral method. The jet preferred mode was numerically identified, and its dependence on various flow parameters were analyzed. The most interesting discovery of the analysis is that the jet preferred frequency, which is denoted by Strouhal number Stp= fpD/u0, is found to vary in non-monotonic manner with the jet exit Mach number M0. The implication of the result for mixing enhancement of supersonic jets with ambient fluids was also discussed.

Original language	English
Title of host publication	ASPACC 2015 - 10th Asia-Pacific Conference on Combustion
Publisher	Combustion Institute
Publication status	Published - 1 Jan 2015
Event	10th Asia-Pacific Conference on Combustion, ASPACC 2015 - Beijing, China Duration: 19 Jul 2015 → 22 Jul 2015

Conference

Conference	10th Asia-Pacific Conference on Combustion, ASPACC 2015
Country/Territory	China
City	Beijing
Period	19/07/15 → 22/07/15

ASJC Scopus subject areas

Energy Engineering and Power Technology
Fuel Technology
General Chemical Engineering
Condensed Matter Physics

Cite this

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title = "An energy integral method analysis of preferred modes and the spreading rates of supersonic circular jets",

abstract = "Jet spreading plays a crucial role in process of fuel mixing in supersonic combustion. The jet preferred mode signifies the maximum spreading rate of the shear layer of jets under periodic excitation. In this paper, linear frequency response of compressible axisymmetric jets was analyzed based on an energy integral method. The jet preferred mode was numerically identified, and its dependence on various flow parameters were analyzed. The most interesting discovery of the analysis is that the jet preferred frequency, which is denoted by Strouhal number Stp= fpD/u0, is found to vary in non-monotonic manner with the jet exit Mach number M0. The implication of the result for mixing enhancement of supersonic jets with ambient fluids was also discussed.",

author = "Dehai Yu and Hongbin Gu and Peng Zhang",

year = "2015",

month = jan,

day = "1",

language = "English",

booktitle = "ASPACC 2015 - 10th Asia-Pacific Conference on Combustion",

publisher = "Combustion Institute",

note = "10th Asia-Pacific Conference on Combustion, ASPACC 2015 ; Conference date: 19-07-2015 Through 22-07-2015",

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An energy integral method analysis of preferred modes and the spreading rates of supersonic circular jets. / Yu, Dehai; Gu, Hongbin; Zhang, Peng.
ASPACC 2015 - 10th Asia-Pacific Conference on Combustion. Combustion Institute, 2015.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - An energy integral method analysis of preferred modes and the spreading rates of supersonic circular jets

AU - Yu, Dehai

AU - Gu, Hongbin

AU - Zhang, Peng

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Jet spreading plays a crucial role in process of fuel mixing in supersonic combustion. The jet preferred mode signifies the maximum spreading rate of the shear layer of jets under periodic excitation. In this paper, linear frequency response of compressible axisymmetric jets was analyzed based on an energy integral method. The jet preferred mode was numerically identified, and its dependence on various flow parameters were analyzed. The most interesting discovery of the analysis is that the jet preferred frequency, which is denoted by Strouhal number Stp= fpD/u0, is found to vary in non-monotonic manner with the jet exit Mach number M0. The implication of the result for mixing enhancement of supersonic jets with ambient fluids was also discussed.

AB - Jet spreading plays a crucial role in process of fuel mixing in supersonic combustion. The jet preferred mode signifies the maximum spreading rate of the shear layer of jets under periodic excitation. In this paper, linear frequency response of compressible axisymmetric jets was analyzed based on an energy integral method. The jet preferred mode was numerically identified, and its dependence on various flow parameters were analyzed. The most interesting discovery of the analysis is that the jet preferred frequency, which is denoted by Strouhal number Stp= fpD/u0, is found to vary in non-monotonic manner with the jet exit Mach number M0. The implication of the result for mixing enhancement of supersonic jets with ambient fluids was also discussed.

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M3 - Conference article published in proceeding or book

BT - ASPACC 2015 - 10th Asia-Pacific Conference on Combustion

PB - Combustion Institute

T2 - 10th Asia-Pacific Conference on Combustion, ASPACC 2015

Y2 - 19 July 2015 through 22 July 2015

ER -

An energy integral method analysis of preferred modes and the spreading rates of supersonic circular jets

Abstract

Conference

ASJC Scopus subject areas

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