Effects of CO/H2 ratio on turbulent combustion characteristics for CO/H2/CO2/O2 mixtures at high pressure

Ryota Sato; Futoshi Matsuno; Jinhua Wang; Taku Kudo; Satoshi Kadowaki; Hideaki Kobayashi

Effects of CO/H₂ ratio on turbulent combustion characteristics for CO/H₂/CO₂/O₂ mixtures at high pressure

Ryota Sato, Futoshi Matsuno, Jinhua Wang, Taku Kudo, Satoshi Kadowaki, Hideaki Kobayashi

IFS - Institute of Fluid Science (institute affiliation only)

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

Abstract

Characteristics of turbulent premixed flames of CO/H₂/CO ₂/O₂ mixtures at high pressures of 0.5 MPa were experimentally investigated. Using OH-PLIF images, flame surface density, mean volume of turbulent flame regions and turbulent burning velocity were calculated. Flame surface density, turbulent burning velocity and intensity of flame radiation of CO/H₂/CO₂/O₂ flames are larger than those of CH₄/air flames while the mean volume of the turbulent flame region, V_f, of CO/H₂/CO₂/O ₂ flames is smaller than that of CH₄/air flames. As the H₂ mole fraction increases, turbulent burning velocity and intensity of flame radiation for CO/H₂/CO₂/O₂ flame becomes larger while the mean volume of the turbulent flame region becomes smaller. When the ratio of the H₂ mole fraction to that of CO is more than 0.5, V_f and S_T/S_L of CO/H ₂/CO₂/O₂ flames become almost the same. It is presumed that the effect of H₂ concentration is dominant for CO/H₂/CO₂/O₂ flame for high H₂ mole fractions.

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

Conference

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

Cite this

@conference{64dfb5f44d8d4107a84bd01f73e85341,

title = "Effects of CO/H2 ratio on turbulent combustion characteristics for CO/H2/CO2/O2 mixtures at high pressure",

abstract = "Characteristics of turbulent premixed flames of CO/H2/CO 2/O2 mixtures at high pressures of 0.5 MPa were experimentally investigated. Using OH-PLIF images, flame surface density, mean volume of turbulent flame regions and turbulent burning velocity were calculated. Flame surface density, turbulent burning velocity and intensity of flame radiation of CO/H2/CO2/O2 flames are larger than those of CH4/air flames while the mean volume of the turbulent flame region, Vf, of CO/H2/CO2/O 2 flames is smaller than that of CH4/air flames. As the H2 mole fraction increases, turbulent burning velocity and intensity of flame radiation for CO/H2/CO2/O2 flame becomes larger while the mean volume of the turbulent flame region becomes smaller. When the ratio of the H2 mole fraction to that of CO is more than 0.5, Vf and ST/SL of CO/H 2/CO2/O2 flames become almost the same. It is presumed that the effect of H2 concentration is dominant for CO/H2/CO2/O2 flame for high H2 mole fractions.",

author = "Ryota Sato and Futoshi Matsuno and Jinhua Wang and Taku Kudo and Satoshi Kadowaki and Hideaki Kobayashi",

year = "2013",

language = "English",

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

}

TY - CONF

T1 - Effects of CO/H2 ratio on turbulent combustion characteristics for CO/H2/CO2/O2 mixtures at high pressure

AU - Sato, Ryota

AU - Matsuno, Futoshi

AU - Wang, Jinhua

AU - Kudo, Taku

AU - Kadowaki, Satoshi

AU - Kobayashi, Hideaki

PY - 2013

Y1 - 2013

N2 - Characteristics of turbulent premixed flames of CO/H2/CO 2/O2 mixtures at high pressures of 0.5 MPa were experimentally investigated. Using OH-PLIF images, flame surface density, mean volume of turbulent flame regions and turbulent burning velocity were calculated. Flame surface density, turbulent burning velocity and intensity of flame radiation of CO/H2/CO2/O2 flames are larger than those of CH4/air flames while the mean volume of the turbulent flame region, Vf, of CO/H2/CO2/O 2 flames is smaller than that of CH4/air flames. As the H2 mole fraction increases, turbulent burning velocity and intensity of flame radiation for CO/H2/CO2/O2 flame becomes larger while the mean volume of the turbulent flame region becomes smaller. When the ratio of the H2 mole fraction to that of CO is more than 0.5, Vf and ST/SL of CO/H 2/CO2/O2 flames become almost the same. It is presumed that the effect of H2 concentration is dominant for CO/H2/CO2/O2 flame for high H2 mole fractions.

AB - Characteristics of turbulent premixed flames of CO/H2/CO 2/O2 mixtures at high pressures of 0.5 MPa were experimentally investigated. Using OH-PLIF images, flame surface density, mean volume of turbulent flame regions and turbulent burning velocity were calculated. Flame surface density, turbulent burning velocity and intensity of flame radiation of CO/H2/CO2/O2 flames are larger than those of CH4/air flames while the mean volume of the turbulent flame region, Vf, of CO/H2/CO2/O 2 flames is smaller than that of CH4/air flames. As the H2 mole fraction increases, turbulent burning velocity and intensity of flame radiation for CO/H2/CO2/O2 flame becomes larger while the mean volume of the turbulent flame region becomes smaller. When the ratio of the H2 mole fraction to that of CO is more than 0.5, Vf and ST/SL of CO/H 2/CO2/O2 flames become almost the same. It is presumed that the effect of H2 concentration is dominant for CO/H2/CO2/O2 flame for high H2 mole fractions.

UR - http://www.scopus.com/inward/record.url?scp=84905454688&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905454688&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84905454688

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

Y2 - 19 May 2013 through 22 May 2013

ER -

Effects of CO/H₂ ratio on turbulent combustion characteristics for CO/H₂/CO₂/O₂ mixtures at high pressure

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