Impact of numerical method on auto-ignition in a temporally evolving mixing layer at various initial conditions

[摘要] Numerical analysis of the auto-ignition of turbulent mixing layer between the cold fuel (hydrogen) and hot oxidizer (air) is presented. The research were performed using an Implicit-Large Eddy Simulation (ILES) method with attention on auto-ignition time, flame kernel localisation and propagation. We focused on an impact of discretization method on auto-ignition scenario and flame development. The results obtained showed that numerical approach plays an important role and to some extent may falsify the results, especially for low oxidiser temperatures.

[发布机构] Czestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Al.Armii Krajowej 21, Czestochowa; 42-201, Poland^1

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Auto-ignition;Discretization method;Flame development;Implicit large Eddy simulations;Initial conditions;Mixing layers;Numerical approaches;Turbulent mixing layers