Burning velocity correlation of methane/air turbulent premixed flames at high pressure and high temperature

2005 ◽  
Vol 30 (1) ◽  
pp. 827-834 ◽  
Author(s):  
Hideaki Kobayashi ◽  
Katsuhiro Seyama ◽  
Hirokazu Hagiwara ◽  
Yasuhiro Ogami
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Burning Velocity ◽  
Premixed Flames ◽  
Turbulent Premixed Flames ◽  
Velocity Correlation ◽  
Turbulent Premixed

High-Pressure Combustion Phenomena

2007 ◽  
Author(s):  
Hideaki Kobayashi
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Flame Spread ◽  
Burning Velocity ◽  
Premixed Flames ◽  
Spread Rate ◽  
Flame Spread Rate ◽  
Droplet Array ◽  
Turbulent Burning Velocity ◽  
Turbulent Premixed

Two high-pressure combustion phenomena recently observed by the author’s group are reviewed. The first one is the flame spread of a droplet array in the supercritical pressure range of the fuel in microgravity. Microgravity experiments are essential for research on droplet combustion, especially at high pressure, because of the large Grashof number in normal gravity. The flame spread rate for an n-decane droplet array was measured at high pressure, and a fuel-vapor jet was found to be generated due to an imbalance of surface tension of the droplet surface, leading to a higher flame spread rate. The second phenomenon is turbulent premixed combustion at high pressure and high temperature, environmental conditions of which are very close to those in SI engines and premixed-type gas turbine combustors. Information on the flame characteristics in such conditions has been very limited. A high-pressure combustion test facility with a large high-pressure combustion chamber enabled us to stabilize turbulent premixed flames with a high turbulence Reynolds number and to perform flame observations and measurements for extended period using lasers. Turbulent burning velocity was successfully measured and significant effects of intrinsic flame instability on flame structure and turbulent burning velocity at high pressure were revealed. Effects of CO2 dilution on high-pressure and high-temperature premixed flames were also investigated to evaluate the fundamental effects of exhaust gas recirculation (EGR) in practical high-load high-pressure combustors.

Effects of CO2 dilution on turbulent premixed flames at high pressure and high temperature

2007 ◽  
Vol 31 (1) ◽  
pp. 1451-1458 ◽  
Author(s):  
Hideaki Kobayashi ◽  
Hirokazu Hagiwara ◽  
Hideaki Kaneko ◽  
Yasuhiro Ogami
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Premixed Flames ◽  
Turbulent Premixed Flames ◽  
Turbulent Premixed

Flame front characteristics of turbulent premixed flames diluted with CO2 and H2O at high pressure and high temperature

2013 ◽  
Vol 34 (1) ◽  
pp. 1429-1436 ◽  
Author(s):  
Jinhua Wang ◽  
Futoshi Matsuno ◽  
Masaki Okuyama ◽  
Yasuhiro Ogami ◽  
Hideaki Kobayashi ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Flame Front ◽  
Premixed Flames ◽  
Turbulent Premixed Flames ◽  
Turbulent Premixed

Burning velocity and flame structure of CH4/NH3/air turbulent premixed flames at high pressure

2019 ◽  
Vol 44 (13) ◽  
pp. 6991-6999 ◽  
Author(s):  
Akinori Ichikawa ◽  
Yuji Naito ◽  
Akihiro Hayakawa ◽  
Taku Kudo ◽  
Hideaki Kobayashi
Keyword(s):  
High Pressure ◽  
Burning Velocity ◽  
Flame Structure ◽  
Premixed Flames ◽  
Turbulent Premixed Flames ◽  
Turbulent Premixed

Burning velocity of turbulent premixed flames in a high-pressure environment

1996 ◽  
Vol 26 (1) ◽  
pp. 389-396 ◽  
Author(s):  
Hideaki Kobayashi ◽  
Takashi Tamura ◽  
Kaoru Maruta ◽  
Takashi Niioka ◽  
Forman A. Williams
Keyword(s):  
High Pressure ◽  
Burning Velocity ◽  
Premixed Flames ◽  
Turbulent Premixed Flames ◽  
High Pressure Environment ◽  
Turbulent Premixed
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