TY - JOUR
T1 - Numerical studies on cavity flame holders for supersonic combustors
AU - Chen, Fang
AU - Chen, Li Hong
AU - Zhang, Xin Yu
PY - 2007/5
Y1 - 2007/5
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
UR - http://www.scopus.com/inward/record.url?scp=34250365846&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:34250365846
SN - 1001-4055
VL - 28
SP - 135
EP - 140
JO - Tuijin Jishu/Journal of Propulsion Technology
JF - Tuijin Jishu/Journal of Propulsion Technology
IS - 2
ER -