Thermal diffusive effect on the flame motion with equivalence ratio oscillation

Abdul Rahman Mohd Rosdzimin; Tatsuya Hagita; Hisashi Tomita; Takeshi Yokomori; Toshihisa Ueda

Thermal diffusive effect on the flame motion with equivalence ratio oscillation

Abdul Rahman Mohd Rosdzimin, Tatsuya Hagita, Hisashi Tomita, Takeshi Yokomori, Toshihisa Ueda

Department of Mechanical Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

Responses of the methane/air premixed flames in an axi-symmetric stagnation flow fields under equivalence ratio oscillations were numerically investigated. The mixture equivalence ratio oscillates at 10 Hz and 20 Hz frequencies with the mean equivalence ratio at lean and rich conditions. One step irreversible reaction mechanism was used in this study. In all cases, the flame responds to the equivalence ratio oscillation in the quasi-steady state condition. It is reasonable because the wavelength by the equivalence ratio oscillation is longer than the flame thickness. It is observed that the flame propagation speed responds to the equivalence ratio oscillation with some hysteresis. This is found due to the thermal diffusion effect. The simplified model based on integral analysis was developed to show the thermal diffusion effect on the flame propagation speed hysteresis.

Original language	English
Publication status	Published - 2013 Jan 1
Event	9th Asia-Pacific Conference on Combustion, ASPACC 2013 - Gyeongju, Korea, Republic of Duration: 2013 May 19 → 2013 May 22

Other

Other	9th Asia-Pacific Conference on Combustion, ASPACC 2013
Country/Territory	Korea, Republic of
City	Gyeongju
Period	13/5/19 → 13/5/22

ASJC Scopus subject areas

Environmental Engineering

Cite this

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title = "Thermal diffusive effect on the flame motion with equivalence ratio oscillation",

abstract = "Responses of the methane/air premixed flames in an axi-symmetric stagnation flow fields under equivalence ratio oscillations were numerically investigated. The mixture equivalence ratio oscillates at 10 Hz and 20 Hz frequencies with the mean equivalence ratio at lean and rich conditions. One step irreversible reaction mechanism was used in this study. In all cases, the flame responds to the equivalence ratio oscillation in the quasi-steady state condition. It is reasonable because the wavelength by the equivalence ratio oscillation is longer than the flame thickness. It is observed that the flame propagation speed responds to the equivalence ratio oscillation with some hysteresis. This is found due to the thermal diffusion effect. The simplified model based on integral analysis was developed to show the thermal diffusion effect on the flame propagation speed hysteresis.",

author = "{Mohd Rosdzimin}, {Abdul Rahman} and Tatsuya Hagita and Hisashi Tomita and Takeshi Yokomori and Toshihisa Ueda",

year = "2013",

month = jan,

day = "1",

language = "English",

note = "9th Asia-Pacific Conference on Combustion, ASPACC 2013 ; Conference date: 19-05-2013 Through 22-05-2013",

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TY - CONF

T1 - Thermal diffusive effect on the flame motion with equivalence ratio oscillation

AU - Mohd Rosdzimin, Abdul Rahman

AU - Hagita, Tatsuya

AU - Tomita, Hisashi

AU - Yokomori, Takeshi

AU - Ueda, Toshihisa

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Responses of the methane/air premixed flames in an axi-symmetric stagnation flow fields under equivalence ratio oscillations were numerically investigated. The mixture equivalence ratio oscillates at 10 Hz and 20 Hz frequencies with the mean equivalence ratio at lean and rich conditions. One step irreversible reaction mechanism was used in this study. In all cases, the flame responds to the equivalence ratio oscillation in the quasi-steady state condition. It is reasonable because the wavelength by the equivalence ratio oscillation is longer than the flame thickness. It is observed that the flame propagation speed responds to the equivalence ratio oscillation with some hysteresis. This is found due to the thermal diffusion effect. The simplified model based on integral analysis was developed to show the thermal diffusion effect on the flame propagation speed hysteresis.

AB - Responses of the methane/air premixed flames in an axi-symmetric stagnation flow fields under equivalence ratio oscillations were numerically investigated. The mixture equivalence ratio oscillates at 10 Hz and 20 Hz frequencies with the mean equivalence ratio at lean and rich conditions. One step irreversible reaction mechanism was used in this study. In all cases, the flame responds to the equivalence ratio oscillation in the quasi-steady state condition. It is reasonable because the wavelength by the equivalence ratio oscillation is longer than the flame thickness. It is observed that the flame propagation speed responds to the equivalence ratio oscillation with some hysteresis. This is found due to the thermal diffusion effect. The simplified model based on integral analysis was developed to show the thermal diffusion effect on the flame propagation speed hysteresis.

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UR - http://www.scopus.com/inward/citedby.url?scp=84905455227&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84905455227

T2 - 9th Asia-Pacific Conference on Combustion, ASPACC 2013

Y2 - 19 May 2013 through 22 May 2013

ER -

Thermal diffusive effect on the flame motion with equivalence ratio oscillation

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