Numerical studies on cavity flame holders for supersonic combustors

Fang Chen; Li Hong Chen; Xin Yu Zhang

Numerical studies on cavity flame holders for supersonic combustors

Fang Chen^*, Li Hong Chen, Xin Yu Zhang

^*Corresponding author for this work

CAS - Institute of Mechanics

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

4 Citations (Scopus)

Abstract

The numerical simulation has been carried out to investigate the reactive flow characteristics for hydrogen supersonic combustion with recessed cavity. Several inclined cavities with a series value of length-to-depth ratio (L/D_u), aft wall angle (θ), aft wall depth (D_d), and H₂ jet location (L_jet) were evaluated for mixing enhancement and combustion stability. It is noted that the hot recirculation zone full of radicals in cavity is the paramount mechanism for stable flame holding. Moreover, combustor with L/D_u = 7-9, θ = 30°, D_u/D_d =1.0, and L_jet = 24 mm is recommended regarding combustion efficiency and total pressure recovery.

Original language	English
Pages (from-to)	135-140
Number of pages	6
Journal	Tuijin Jishu/Journal of Propulsion Technology
Volume	28
Issue number	2
Publication status	Published - May 2007
Externally published	Yes

Keywords

Combustion performance
Concave body
Hydrogen
Numerical simulation
Supersonic combustion

Cite this

Chen, F., Chen, L. H., & Zhang, X. Y. (2007). Numerical studies on cavity flame holders for supersonic combustors. Tuijin Jishu/Journal of Propulsion Technology, 28(2), 135-140.

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abstract = "The numerical simulation has been carried out to investigate the reactive flow characteristics for hydrogen supersonic combustion with recessed cavity. Several inclined cavities with a series value of length-to-depth ratio (L/Du), aft wall angle (θ), aft wall depth (Dd), and H2 jet location (Ljet) were evaluated for mixing enhancement and combustion stability. It is noted that the hot recirculation zone full of radicals in cavity is the paramount mechanism for stable flame holding. Moreover, combustor with L/Du = 7-9, θ = 30°, Du/Dd =1.0, and Ljet = 24 mm is recommended regarding combustion efficiency and total pressure recovery.",

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author = "Fang Chen and Chen, {Li Hong} and Zhang, {Xin Yu}",

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AU - Chen, Fang

AU - Chen, Li Hong

AU - Zhang, Xin Yu

PY - 2007/5

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N2 - The numerical simulation has been carried out to investigate the reactive flow characteristics for hydrogen supersonic combustion with recessed cavity. Several inclined cavities with a series value of length-to-depth ratio (L/Du), aft wall angle (θ), aft wall depth (Dd), and H2 jet location (Ljet) were evaluated for mixing enhancement and combustion stability. It is noted that the hot recirculation zone full of radicals in cavity is the paramount mechanism for stable flame holding. Moreover, combustor with L/Du = 7-9, θ = 30°, Du/Dd =1.0, and Ljet = 24 mm is recommended regarding combustion efficiency and total pressure recovery.

AB - The numerical simulation has been carried out to investigate the reactive flow characteristics for hydrogen supersonic combustion with recessed cavity. Several inclined cavities with a series value of length-to-depth ratio (L/Du), aft wall angle (θ), aft wall depth (Dd), and H2 jet location (Ljet) were evaluated for mixing enhancement and combustion stability. It is noted that the hot recirculation zone full of radicals in cavity is the paramount mechanism for stable flame holding. Moreover, combustor with L/Du = 7-9, θ = 30°, Du/Dd =1.0, and Ljet = 24 mm is recommended regarding combustion efficiency and total pressure recovery.

KW - Combustion performance

KW - Concave body

KW - Hydrogen

KW - Numerical simulation

KW - Supersonic combustion

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SN - 1001-4055

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EP - 140

JO - Tuijin Jishu/Journal of Propulsion Technology

JF - Tuijin Jishu/Journal of Propulsion Technology

IS - 2

ER -

Numerical studies on cavity flame holders for supersonic combustors

Abstract

Keywords

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