Combustion of low-calorie gases under low exergy loss conditions: Development of combustors based on the international safety standards

低火用损失条件下低热值气体的燃烧：基于国际安全标准的燃烧器开发

• 批准号: 23560219
• 负责人: KADOWAKI Satoshi
• 金额: $ 3.49万
• 依托单位: Nagaoka University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560219/
• 关键词: 熱工学; 燃焼診断; エクセルギー; 安全確認型; エクセルぎー; リスクアセスメント

We treated CH4/O2/CO2 mixtures to study the front shape and fluctuation of cellular flames. As the equivalence decreased, the cell width and cell depth became larger, which was due to the high intensity of diffusive-thermal instability. In addition, we performed the time series analysis on the brightness fluctuation. The obtained attractors were similar to the torus, and the trajectory was complicated at low equivalence ratios. Moreover, we performed numerical simulation to study the characteristics of three-dimensional cellular fronts. As the unburned-gas temperature became higher, the growth rate increased. On the other hand, the shape of cellular fronts became smoother, which was due to the weakness of thermal-expansion effects.

我们对CH4/O2/CO2混合物进行处理，研究了蜂窝火焰的锋面形状和波动。随着等效性的降低，电池宽度和电池深度变大，这是由于高强度的扩散热不稳定性。此外，我们对亮度波动进行了时间序列分析。得到的吸引子与环面相似，在低等效比下轨迹复杂。此外，我们还进行了数值模拟来研究三维胞状锋的特征。随着未燃气体温度的升高，生长速率增大。另一方面，由于热膨胀效应减弱，胞状锋的形状变得更平滑。

项目成果

Shape and fluctuation of cellular premixed flames : lean combustion system of CH_4/O_2/CO_2 mixtures

蜂窝预混火焰的形状与波动:CH_4/O_2/CO_2混合物的稀薄燃烧系统

• 发表时间: 2013
• 期刊: Journal of Visualization
• 影响因子: 1.7
• 作者: Kadowaki;S. and Ohashi;H.
• 通讯作者: H.

Numerical study on the hydrodynamic instability of high-temperature premixed flames

高温预混火焰流体动力学不稳定性数值研究

• 发表时间: 2013
• 作者: Kadowaki;S.
• 通讯作者: S.

Numerical study on the intrinsic instability of high-temperature premixed flames under the conditions of constant density and constant pressure in the unburned gas

未燃气体等密度、恒压条件下高温预混火焰本征不稳定性数值研究

• 发表时间: 2013
• 期刊: Journal of Fluid Science and Technology
• 影响因子: 0.8
• 作者: Kadowaki;S.;Oshima;T.;and Kobayashi;H.
• 通讯作者: H.

フラットバーナー上に形成されるセル状火炎のレーザー計測

激光测量平板燃烧器上形成的蜂窝状火焰

• 发表时间: 2011
• 作者: Y.Tada;Y.Yoshida;A.Takimoto and H.Onishi;高木 成郎，田口 寛，姜 東赫，横田 和彦，佐藤 光太郎;大橋,目崎,山田,門脇
• 通讯作者: 大橋,目崎,山田,門脇

Shape and fluctuation of cellular premixed flames: lean combustion system of CH4/O2/CO2 mixtures

蜂窝预混火焰的形状和波动：CH4/O2/CO2混合物的稀薄燃烧系统

• 发表时间: 2013
• 期刊: Journal of Visualization
• 影响因子: 1.7
• 作者: 65.Kadowaki;S. and Ohashi;H.
• 通讯作者: H.