A study on kinetic characteristics of auto Ignition process of natural gas-hydrogen-air mixture

作者：Gou Xiao Long^*; Shi Wan Ling; Wang Guang Jun

来源：Journal of Chongqing University, 2010, 33(6): 67-71.

• Auto-ignition
• Auto-ignition process
• Component concentration
• Constant pressures
• Flame propagation speed
• Flame temperatures
• Hydrogen-air mixture
• Ignition delay time
• Ignition kinetics
• Initial conditions
• Kinetic characteristics
• Kinetic models
• Nature gas

Based on GRI-Mech 3.0 mechanism, using kinetic model, the auto ignition characteristics of nature gas-hydrogen-air mixture are studied in different initial conditions under constant pressure. This study focuses on the changes of temperature and component concentrations, ignition delay time and flame propagation speed. The results show that under different initial conditions, with the increase of hydrogen fraction in the mixture, the ignition delay time decreases significantly and flame propagation speed increases significantly. On the other hand, Hydrogen fraction has been found of little influence on flame temperature.

• 出版日期2010