A reaction dynamic adaptive chemistry modeling method based on sensitivity analysis

作者：Gou Xiao Long^*; Shi Wan Ling; Gui Ying

来源：Journal of Propulsion Technology, 2011, 32(4): 534-538.

• Adaptive
• Adaptive Chemistry
• Auto-ignition process
• Combustion pro-cess
• CPU time
• Dynamic process
• Mechanism reduction
• Mole fraction
• Number of species
• Reaction dynamics
• Reactive flow
• Simulation process
• Working conditions

In order to save CPU time for the calculation of dynamic process for reactive flow, a dynamic adaptive chemistry modeling method based on sensitivity analysis theory is presented. A detailed mechanism can be reduced to a lot of instantaneously locally accurate mechanisms with smaller number of species and reactions, and different instantaneously accurate sub-mechanisms are used in different working conditions to model the combustion process of the reactive flow. This method is implemented into the simulating of homogeneous bulk space methane auto-ignition process using GRI-3.0 mechanism as the detailed mechanism. Compared with the detailed mechanism, the process produces the temperature and species mole fraction curves with high accuracy. Since the smaller reaction numbers are used in the simulation process, this method makes the whole calculation much more efficient.

• 出版日期2011
• 单位重庆大学