Characteristics of Combustion and Heat Transfer of Premixed Flat Flames with Heat Loss Stabilized in a Stagnation Flow
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概要
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The effects of the temperature of the stagnation surface (surface temperature), the Lewis number of the deficient reactant and preheating of the unburned gas on the characteristics of premixed flat flames with heat loss stabilized in the stagnation flow were numerically examined in order to utilize the heat from the flame effectively and to develop a new type of domestic burners and heaters. Then, the characteristics of convective heat transfer to the stagnation surface from the flame were discussed. (1) With an increase in the surface temperature T_w and in the preheat temperature of the unburned gas T_e, and with a decrease in the Lewis number Le, the flame temperature at the same value of the first Damkohler number D_I is increased. (2) The heat flux utilized from the flame at the near limit of extinction is increased with an increase in T_e, and with a decrease in Le and T_w. (3) The characteristics of heat transfer to the stagnation surface in the case in which the premixed flat flame is stabilized in the stagnation flow are superior to those in the stagnation flow in which only the burned gas flows. (4) In order to increase the heat flux utilized from the premixed flat flame stabilized in stagnation flow, it is necessary to maintain higher flame temperature and to stabilize the flame near the stagnation surface. Therefore, preheating of the unburned gas and use of the premixed gas with Le<1.0 are effectual in improving characteristics of heat transfer to the stagnation surface.
- 一般社団法人日本機械学会の論文
- 1996-11-15
著者
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Kawamura Takeshi
Department Of Biodefense Nagoya City University Graduate School Of Medical Sciences
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Kawamura Takeshi
Department Of Molecular Biology Keio University School Of Medicine
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Ito Shouichi
Department of Mechanical Engineering, Daido Institute of Technology
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Asato Katuo
Department of Mechanical Engineering, Gifu University
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Ito Yoshihiro
Mitsubishi Heavy Industry
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Asato Katuo
Department Of Mechanical Engineering Gifu University
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Ito Shouichi
Department Of Mechanical Engineering Daido Institute Of Technology
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Ito Shouich
Department of Mechanical Engineering, Daido Institute of Technology
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