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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2017, Vol. 38 ›› Issue (1): 20036-020036.doi: 10.7527/S1000-6893.2016.0265

• Review • Previous Articles     Next Articles

Research progress of combustion in supersonic mixing layers

CHEN Qian1,2, ZHANG Huiqiang1, WANG Bing1, ZHOU Weijiang2, YANG Yunjun2   

  1. 1. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
    2. China Academy of Aerospace Aerodynamics, Beijing 100074, China
  • Received:2016-01-11 Revised:2016-10-18 Online:2017-01-15 Published:2016-10-17
  • Supported by:

    National Natural Science Foundation of China (91541206)

Abstract:

The research on combustion in supersonic mixing layers is an effective approach to solve the problems encountered in supersonic combustion, and hence is important for the development of the scramjet. In the past twenty years, a plenty of work has been conducted in this field, and needs to be summarized. As the research on flow properties of supersonic inert mixing layers is the foundation of the research on combustion in supersonic mixing layers, these flow properties including instantaneous flow structures and time-averaged statistic properties are reviewed. Ignition properties are discussed including ignition distance and ignition processes. Flame properties, especially flame structures, are explored. Extinction properties are considered. Heat release and compressibility effects are summarized. Advances in combustion instability are given. The review suggests that a large amount of research work on combustion in supersonic mixing layers still needs to be conducted. Regarding ignition properties, flame properties and extinction properties, future research could focus on ignition process, flame propagation process and extinction process, and the effects of flow parameter, thermodynamic parameters, species parameters and external factors on ignition distance, flame structures and extinction position, using turbulent simulation and detailed mechanisms. With respect to heat release and compressibility effects, future research could concentrate on the instantaneous properties and statistic properties of high-exothermicity and high-compressibility reacting supersonic mixing layers, using high precision numerical or experimental methods. For combustion instability, future research could be devoted to general criteria and inherent mechanisms for supersonic mixing layer combustion instability, using high precision numerical or experimental methods.

Key words: supersonic turbulent flow, ignition, flame, excitation, heat release effects, compressibility effects, instability

CLC Number: