Chaotic thermoacoustic oscillations in an aero-engine combustor with a liquid-fuelled turbulent diffusion flame

Yu Guan; Larry K.B. Li; Byeonguk Ahn; Kyu Tae Kim

Chaotic thermoacoustic oscillations in an aero-engine combustor with a liquid-fuelled turbulent diffusion flame

Yu Guan, Larry K.B. Li, Byeonguk Ahn, Kyu Tae Kim

Research output: Unpublished conference presentation (presented paper, abstract, poster) › Conference presentation (not published in journal/proceeding/book) › Academic research › peer-review

Abstract

We experimentally investigate the nonlinear dynamics of a thermoacoustically self-excited aero-engine combustion system featuring a turbulent swirling liquid-fuelled diffusion flame in a variable-length combustor. We characterize the steady-state dynamics of the system via time-resolved measurements of the acoustic pressure in the combustor. When the combustor length is increased after the onset of thermoacoustic instability, we find that the pressure signal transitions from a period-1 limit cycle to chaos via the Ruelle?Takens?Newhouse route. This shows that a liquid-fuelled diffusion-flame combustor can exhibit dynamics as complex as those of its gaseous-fuelled counterparts.

Original language	English
Publication status	Published - 2019
Externally published	Yes
Event	12th Asia-Pacific Conference on Combustion, ASPACC 2019 - Fukuoka, Japan Duration: 1 Jul 2019 → 5 Jul 2019

Conference

Conference	12th Asia-Pacific Conference on Combustion, ASPACC 2019
Country/Territory	Japan
City	Fukuoka
Period	1/07/19 → 5/07/19

ASJC Scopus subject areas

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

Cite this

@conference{86bb7eda10c84110967806b78c1d052a,

title = "Chaotic thermoacoustic oscillations in an aero-engine combustor with a liquid-fuelled turbulent diffusion flame",

abstract = "We experimentally investigate the nonlinear dynamics of a thermoacoustically self-excited aero-engine combustion system featuring a turbulent swirling liquid-fuelled diffusion flame in a variable-length combustor. We characterize the steady-state dynamics of the system via time-resolved measurements of the acoustic pressure in the combustor. When the combustor length is increased after the onset of thermoacoustic instability, we find that the pressure signal transitions from a period-1 limit cycle to chaos via the Ruelle?Takens?Newhouse route. This shows that a liquid-fuelled diffusion-flame combustor can exhibit dynamics as complex as those of its gaseous-fuelled counterparts.",

author = "Yu Guan and Li, \{Larry K.B.\} and Byeonguk Ahn and Kim, \{Kyu Tae\}",

note = "Funding Information: This work was funded by the Research Grants Council of Hong Kong (Projects 16235716 and 26202815) and the Ministry of Trade, Industry \& Energy (MOTIE) of the Republic of Korea (Grant No. 10067074). Publisher Copyright: {\textcopyright} Asia-Pacific Conference on Combustion, ASPACC 2019.All right reserved.; 12th Asia-Pacific Conference on Combustion, ASPACC 2019 ; Conference date: 01-07-2019 Through 05-07-2019",

year = "2019",

language = "English",

}

Chaotic thermoacoustic oscillations in an aero-engine combustor with a liquid-fuelled turbulent diffusion flame. / Guan, Yu; Li, Larry K.B.; Ahn, Byeonguk et al.
2019. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.

Research output: Unpublished conference presentation (presented paper, abstract, poster) › Conference presentation (not published in journal/proceeding/book) › Academic research › peer-review

TY - CONF

T1 - Chaotic thermoacoustic oscillations in an aero-engine combustor with a liquid-fuelled turbulent diffusion flame

AU - Guan, Yu

AU - Li, Larry K.B.

AU - Ahn, Byeonguk

AU - Kim, Kyu Tae

N1 - Funding Information: This work was funded by the Research Grants Council of Hong Kong (Projects 16235716 and 26202815) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (Grant No. 10067074). Publisher Copyright: © Asia-Pacific Conference on Combustion, ASPACC 2019.All right reserved.

PY - 2019

Y1 - 2019

N2 - We experimentally investigate the nonlinear dynamics of a thermoacoustically self-excited aero-engine combustion system featuring a turbulent swirling liquid-fuelled diffusion flame in a variable-length combustor. We characterize the steady-state dynamics of the system via time-resolved measurements of the acoustic pressure in the combustor. When the combustor length is increased after the onset of thermoacoustic instability, we find that the pressure signal transitions from a period-1 limit cycle to chaos via the Ruelle?Takens?Newhouse route. This shows that a liquid-fuelled diffusion-flame combustor can exhibit dynamics as complex as those of its gaseous-fuelled counterparts.

AB - We experimentally investigate the nonlinear dynamics of a thermoacoustically self-excited aero-engine combustion system featuring a turbulent swirling liquid-fuelled diffusion flame in a variable-length combustor. We characterize the steady-state dynamics of the system via time-resolved measurements of the acoustic pressure in the combustor. When the combustor length is increased after the onset of thermoacoustic instability, we find that the pressure signal transitions from a period-1 limit cycle to chaos via the Ruelle?Takens?Newhouse route. This shows that a liquid-fuelled diffusion-flame combustor can exhibit dynamics as complex as those of its gaseous-fuelled counterparts.

UR - https://www.scopus.com/pages/publications/85083950832

M3 - Conference presentation (not published in journal/proceeding/book)

AN - SCOPUS:85083950832

T2 - 12th Asia-Pacific Conference on Combustion, ASPACC 2019

Y2 - 1 July 2019 through 5 July 2019

ER -

Chaotic thermoacoustic oscillations in an aero-engine combustor with a liquid-fuelled turbulent diffusion flame

Abstract

Conference

ASJC Scopus subject areas

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