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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (1): 58-85.doi: 10.7527/S1000-6893.2014.0228

• Aerodynamics and Others • Previous Articles     Next Articles

Analysis of flow characteristics for hypersonic vehicle

WU Ziniu, BAI Chenyuan, LI Juan, CHEN Zijun, JI Shixiang, WANG Dan, WANG Wenbin, XU Yizhe, YAO Yao   

  1. School of Aerospace, Tsinghua University, Beijing 100084, China
  • Received:2014-07-24 Revised:2014-09-30 Online:2015-01-15 Published:2015-01-24
  • Supported by:

    National Natural Science Foundation of China(90716009); National Basic Research Program of China (2012CB720205)

Abstract:

Modern hypersonic vehicles have local non-streamlined obstacles, operate at lower turbulent environment with high Mach number and lower Reynolds number and cruise in air subjected to shock and friction heating. Due to these factors, hypersonic flows are full of strong local flow structures such as strong shock waves and thick boundary layers, with severe interactions between them. Aerodynamic heating is strengthened locally by such interactions. A number of critical phenomena such as transition and pressure perturbations are quite sensitive and the competitive influences of wave and frictional drags make the lift to drag ratio have a barrier. All these are not simply dependent on the Mach number and Reynolds number, but also dependent on many dimensional parameters, so that modelling by ground facilities is difficult and a combined study of theory, numerical study and experimental measurement are necessary to solve an engineering problem. In this paper, we give an overview of the state-of-art knowledge of the most important and critical physics of hypersonic flow and discuss the methods to solve hypersonic flow problems in the most possible effective way.This review and discussion are hopefully useful for further fundamental studies and for providing a bridge between fundamental study and engineering applications.

Key words: hypersonic flow, critical phenomena, shock wave, multiple wave interaction, influence factor

CLC Number: