A burning velocity correlation for premixed hydrogen/air/steam flames

Chae Hoon Sohn; Yong Gi Aum; Suk Ho Chung; Seong Wan Hong; Hee Dong Kim

doi:10.1007/BF02970488

A burning velocity correlation for premixed hydrogen/air/steam flames

Chae Hoon Sohn^*, Yong Gi Aum, Suk Ho Chung, Seong Wan Hong, Hee Dong Kim

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In view of safety assessment of containment integrity in nuclear power plants, the structures and burning velocity characteristics of hydrogen/air/steam premixed flames have been analyzed numerically using a detailed chemical mechanism with 19 elementary steps concerning H₂/O₂ reactions. Time integration and the modified Newton method are applied in solving the governing equations and an adaptive grid method is employed to resolve the stiffness. Burning velocities are obtained as a function of hydrogen mole fraction, steam mole fraction, and initial temperature. The effect of carbon monoxide addition on burning velocities are also considered. The calculated burning velocities are generally lower than the existing experimental values. However, they show good qualitative agreement irrespective of the reaction mechanisms used in the computation. Steam is found to have both cooling effect and chemical effect affecting chain-branching reaction and heat release. A correlation on burning velocities is obtained and can be used as an improved relation over a wide range of steam concentration.

Original language	English (US)
Pages (from-to)	294-303
Number of pages	10
Journal	KSME International Journal
Volume	13
Issue number	3
DOIs	https://doi.org/10.1007/BF02970488
State	Published - 1999
Externally published	Yes

Keywords

Burning velocity
Hydrogen/Air/Steam
Premixed Flame

ASJC Scopus subject areas

Mechanical Engineering

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10.1007/BF02970488

Cite this

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title = "A burning velocity correlation for premixed hydrogen/air/steam flames",

abstract = "In view of safety assessment of containment integrity in nuclear power plants, the structures and burning velocity characteristics of hydrogen/air/steam premixed flames have been analyzed numerically using a detailed chemical mechanism with 19 elementary steps concerning H2/O2 reactions. Time integration and the modified Newton method are applied in solving the governing equations and an adaptive grid method is employed to resolve the stiffness. Burning velocities are obtained as a function of hydrogen mole fraction, steam mole fraction, and initial temperature. The effect of carbon monoxide addition on burning velocities are also considered. The calculated burning velocities are generally lower than the existing experimental values. However, they show good qualitative agreement irrespective of the reaction mechanisms used in the computation. Steam is found to have both cooling effect and chemical effect affecting chain-branching reaction and heat release. A correlation on burning velocities is obtained and can be used as an improved relation over a wide range of steam concentration.",

keywords = "Burning velocity, Hydrogen/Air/Steam, Premixed Flame",

author = "Sohn, {Chae Hoon} and Aum, {Yong Gi} and Chung, {Suk Ho} and Hong, {Seong Wan} and Kim, {Hee Dong}",

year = "1999",

doi = "10.1007/BF02970488",

language = "English (US)",

volume = "13",

pages = "294--303",

journal = "KSME International Journal",

issn = "1226-4865",

publisher = "Springer Verlag",

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TY - JOUR

T1 - A burning velocity correlation for premixed hydrogen/air/steam flames

AU - Sohn, Chae Hoon

AU - Aum, Yong Gi

AU - Chung, Suk Ho

AU - Hong, Seong Wan

AU - Kim, Hee Dong

PY - 1999

Y1 - 1999

N2 - In view of safety assessment of containment integrity in nuclear power plants, the structures and burning velocity characteristics of hydrogen/air/steam premixed flames have been analyzed numerically using a detailed chemical mechanism with 19 elementary steps concerning H2/O2 reactions. Time integration and the modified Newton method are applied in solving the governing equations and an adaptive grid method is employed to resolve the stiffness. Burning velocities are obtained as a function of hydrogen mole fraction, steam mole fraction, and initial temperature. The effect of carbon monoxide addition on burning velocities are also considered. The calculated burning velocities are generally lower than the existing experimental values. However, they show good qualitative agreement irrespective of the reaction mechanisms used in the computation. Steam is found to have both cooling effect and chemical effect affecting chain-branching reaction and heat release. A correlation on burning velocities is obtained and can be used as an improved relation over a wide range of steam concentration.

AB - In view of safety assessment of containment integrity in nuclear power plants, the structures and burning velocity characteristics of hydrogen/air/steam premixed flames have been analyzed numerically using a detailed chemical mechanism with 19 elementary steps concerning H2/O2 reactions. Time integration and the modified Newton method are applied in solving the governing equations and an adaptive grid method is employed to resolve the stiffness. Burning velocities are obtained as a function of hydrogen mole fraction, steam mole fraction, and initial temperature. The effect of carbon monoxide addition on burning velocities are also considered. The calculated burning velocities are generally lower than the existing experimental values. However, they show good qualitative agreement irrespective of the reaction mechanisms used in the computation. Steam is found to have both cooling effect and chemical effect affecting chain-branching reaction and heat release. A correlation on burning velocities is obtained and can be used as an improved relation over a wide range of steam concentration.

KW - Burning velocity

KW - Hydrogen/Air/Steam

KW - Premixed Flame

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U2 - 10.1007/BF02970488

DO - 10.1007/BF02970488

M3 - Article

AN - SCOPUS:24044447700

SN - 1226-4865

VL - 13

SP - 294

EP - 303

JO - KSME International Journal

JF - KSME International Journal

IS - 3

ER -

A burning velocity correlation for premixed hydrogen/air/steam flames

Abstract

Keywords

ASJC Scopus subject areas

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