Correlation of turbulent burning velocity of syngas-air mixtures at high pressure up to 1.0 MPa (PDF)
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Correlation of turbulent burning velocity of syngas-air mixtures at high pressure up to 1.0 MPa (PDF)
- 发表刊物：
- Exp Therm Fuild Sci
- 摘要：
- Instantaneous flame front structures of the turbulent premixed flames of syngas/air and CH4/air mixtures were investigated using OH-PLIF technique at high pressure up to 1.0 MPa, through which the turbulent burning velocities were derived and correlated with the turbulence intensity. Results show that both syngas/air and CH4/air mixtures, ST/SL increases remarkably with the increase of u’/SL particularly in the weak turbulence region. For the syngas/air mixture, the intensity of flame front wrinkle is promoted with the increase of hydrogen fraction in the syngas due to the increased preferential diffusive-thermal instability. Compared to CH4/air mixture, the syngas flames possess much wrinkled flame front with much smaller fine cusps structure, and with increasing u’/SL, the rate of the increase of ST/SL for the syngas/air mixtures is more significant than that of CH4/air mixtures. This demonstrates that the increase of flame front area due to turbulence wrinkling is promoted by flame intrinsic instability for syngas/air mixtures. The values of ST/SL for all mixtures increase with the increase of pressure because of the decrease of flame thickness which promotes the hydrodynamic instability. A general correlation of turbulent burning velocity for the syngas/air and CH4/air mixtures was obtained in the form of ST/SL∝a[(P/P0)(u’/SL)]n.
- 合写作者：
- Wang JH, Zhang M, Xie YL, Huang ZH
- 卷号：
- 2013, 50:90-96
- 页面范围：
- 90-96
- 是否译文：
- 否
- 发表时间：
- 2013-08-02