TED-AJ03-374 ESTIMATIONS OF THE HEAT RELEASE RATE IN METHANE-AIR PREMIXED FLAMES BY CH-PLIF
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概要
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Relationships between the local heat release rate and CH concentration have been investigated by numerical simulations of methane-air premixed flames and simultaneous CH and OH PLIF (Planar Laser Induced Fluorescence) measurement has been also conducted for lean cellular premixed flame as well as for laminar flames. Numerical simulations are conducted for laminar premixed flames and turbulent ones by using PREMIX in CHEMKIN and two dimensional DNS code with GRI mechanism ver. 2.11,respectively. In the case of laminar premixed flame, the distance between the peak of heat release rate and that of CH concentration is under 91μm for all equivalence ratio calculated in present work. Even for the premixed flame in high intensity turbulence, the distribution of the heat release[figure]rate coincides with that of CH mole fraction as shown in Figure A-1. For CH PLIF measurements in the laminar premixed flame of slot burner, CH fluorescence intensity in terms of equivalence ratio shows a similar trend with CH mole fraction computed by GRI mechanism. Simultaneous CH and OH PLIF measurement gave us useful information of instantaneous reaction zone. In addition, CH fluorescence can be measured for lean conditions where CH mole fraction significantly decreases compared with that of stoichiometric condition as shown in Figure A-2. These results imply that CH PLIF measurements can be applicable to the estimation of the spatial fluctuations of heat release rate in the turbulent premixed flame.[figure]
- 一般社団法人日本機械学会の論文
著者
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Choi Gyung
Cfd Technology Center National Aerospace Laboratory
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Miyauchi Toshio
Department of Mechanical and Aerospace Engineering,Tokyo Institue of Technology
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Miyauchi Toshio
Department Of Mechanical And Aerospace Engineering Tokyo Institute Of Technology
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TANAHASHI Mamoru
Department of Mechano-Aerospace Engineering, Tokyo Institute of Technology
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Tanahashi Mamoru
Department Of Mechanical And Aerospace Engineering Tokyo Institute Of Technology
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TSUKINARI Shunsuke
Department of Mechanical and Aerospace Engineering, Tokyo Institute of Technology
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SAITO Toshihiko
Department of Mechanical and Aerospace Engineering, Tokyo Institute of Technology
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Tsukinari Shunsuke
Department Of Mechanical And Aerospace Engineering Tokyo Institute Of Technology
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Saito Toshihiko
Department Of Mechanical And Aerospace Engineering Tokyo Institute Of Technology
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Saito Toshihiko
Department Of Internal Medicine Tokyo Medical College
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Tanahashi Mamoru
Department of Mechanical and Aerospace Engineering, Tokyo Institute of Technology
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Saito Toshihiko
Department of Cardiology, Yaizu City Hospital
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