DNS with buoyancy force and LES validation of the second order moment turbulent combustion model

作者：Wang Fang^*; Zhou Li Xing; Xu Chun Xiao; Huang Yong

来源：Journal of Engineering Thermophysics, 2009, 30(2): 339-342.

• Buoyancy forces
• Combustion models
• Methane airs
• Reasonability
• Second-order moments
• Spectral methods
• Sub-grid scale
• Three-dimensional channels
• Turbulent combustion model
• Turbulent reacting channel flows
• Turbulent reacting flows

The direct numerical simulation (DNS) of three-dimensional channel turbulent reacting flows with buoyancy force using a spectral method was carried out. The statistical DNS results are used to validate the second order moment sub-grid scale (SOM-SGS) turbulent combustion model. The results show that the SOM-SGS model is reasonable. Furthermore, a methane air jet flame was simulated by large eddy simulation (LES) using the SOM-SGS model. Additionally the LES statistical results show the reasonability of the RANS algebra SOM (ASOM) combustion model.

• 出版日期2009