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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (1): 261-273.doi: 10.7527/S1000-6893.2014.0239

• Engine • Previous Articles     Next Articles

Modeling of turbulence-chemistry interactions in numerical simulations of supersonic combustion

YANG Yue1,2, YOU Jiaping1, SUN Mingbo3   

  1. 1. State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China;
    2. Center for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, China;
    3. Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China
  • Received:2014-07-25 Revised:2014-10-31 Online:2015-01-15 Published:2014-10-31
  • Supported by:

    National Thousand Young Talent Program (5th batch), Organization Department of CPC, China

Abstract:

The high-fidelity numerical simulation is considered as a useful approach to understand the turbulence-chemistry interactions in supersonic turbulent combustion and it can be used as a predictive model for engine design in engineering applications. In numerical simulations, large-eddy simulation and Reynolds averaged Navier-Stokes simulation require to model the effects of the motion and chemical reactions at small scales on large scale motions. The existing turbulence-chemistry interaction models can be classified into two types: the flamelet-like model and the probability density function model. Both types have their own advantages and weaknesses in different applications. In addition, most of the existing models are based on low-Mach-number combustion, while the supersonic combustion involves more complex processes such as rapid mixing, local extinctions/re-ignitions and shock waves, which pose significant challenges to the modeling of turbulence-chemistry interactions.

Key words: supersonic flow, turbulent combustion, flamelet model, probability density function method, large-eddy simulation

CLC Number: