Experimental investigation of the laminar stagnating premixed flame with fuel concentration oscillation

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study investigates the effect of concentration oscillation on the stagnating laminar premixed flame experimentally. The frequency of the concentration oscillation is 5 Hz and the mean equivalence ratio is set from 0.7 to 0.85. The concentration oscillation is formed by the oscillator with two cylinder piston units which produce alternative ejection of leaner and richer premixture. The velocity fluctuation is suppressed by keeping total flow rate nearly constant with sinusoidal movement of two pistons in 180 degree phase difference in the oscillator. The fuel concentration variation between exit of burner and stagnation plate is visualized by an acetone UVIF. The instantaneous distribution image of the fluorescence of seeded acetone and flame direct images are recorded by a high speed video camera with image intensifier. The flame position variation with concentration oscillation is compared to that without concentration oscillation. The effect of concentration oscillation was seen although there is a small velocity fluctuation. In the leaner case (φ = 0.70), the amplitude of flame position movement due to the concentration oscillation is larger than in near stoichiometric case (φ = 0.85), while the velocity oscillation is nearly the same.

Original languageEnglish
Title of host publicationProceedings of the 9th Asia-Pacific Conference on Combustion, ASPACC 2013
PublisherKorean Society of Combustion
Publication statusPublished - 2013
Event9th Asia-Pacific Conference on Combustion, ASPACC 2013 - Gyeongju, Korea, Republic of
Duration: 2013 May 192013 May 22

Other

Other9th Asia-Pacific Conference on Combustion, ASPACC 2013
CountryKorea, Republic of
CityGyeongju
Period13/5/1913/5/22

Fingerprint

Acetone
Pistons
High speed cameras
Video cameras
Fuel burners
Fluorescence
Flow rate

ASJC Scopus subject areas

  • Environmental Engineering

Cite this

Tomita, H., Hagita, T., Mohd Rosdzimin, A. R., Yokomori, T., & Ueda, T. (2013). Experimental investigation of the laminar stagnating premixed flame with fuel concentration oscillation. In Proceedings of the 9th Asia-Pacific Conference on Combustion, ASPACC 2013 Korean Society of Combustion.

Experimental investigation of the laminar stagnating premixed flame with fuel concentration oscillation. / Tomita, Hisashi; Hagita, Tatsuya; Mohd Rosdzimin, Abdul Rahman; Yokomori, Takeshi; Ueda, Toshihisa.

Proceedings of the 9th Asia-Pacific Conference on Combustion, ASPACC 2013. Korean Society of Combustion, 2013.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tomita, H, Hagita, T, Mohd Rosdzimin, AR, Yokomori, T & Ueda, T 2013, Experimental investigation of the laminar stagnating premixed flame with fuel concentration oscillation. in Proceedings of the 9th Asia-Pacific Conference on Combustion, ASPACC 2013. Korean Society of Combustion, 9th Asia-Pacific Conference on Combustion, ASPACC 2013, Gyeongju, Korea, Republic of, 13/5/19.
Tomita H, Hagita T, Mohd Rosdzimin AR, Yokomori T, Ueda T. Experimental investigation of the laminar stagnating premixed flame with fuel concentration oscillation. In Proceedings of the 9th Asia-Pacific Conference on Combustion, ASPACC 2013. Korean Society of Combustion. 2013
Tomita, Hisashi ; Hagita, Tatsuya ; Mohd Rosdzimin, Abdul Rahman ; Yokomori, Takeshi ; Ueda, Toshihisa. / Experimental investigation of the laminar stagnating premixed flame with fuel concentration oscillation. Proceedings of the 9th Asia-Pacific Conference on Combustion, ASPACC 2013. Korean Society of Combustion, 2013.
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