Research Progress of Supersonic Jet Mixing Enhancement Technology Based on Slope and Wavy Wall

With the rapid development of scramjet technology, the requirement of full mixing and efficient combustion of fuel jet and supersonic air flow with very short residence time in the combustion chamber is becoming much higher. In order to solve the above problems, it is necessary to develop a set of stable and efficient injection scheme. Therefore, the mixing enhancement strategy of supersonic fuel has gradually become a research focus of aerospace scholars at home and abroad. Mixed enhancement methods can be divided into passive mixed enhancement and active mixed enhancement according to their mechanisms. In this paper, the slope and wavy wall shock generators in passive hybrid enhancement methods are summarized respectively, and the research progress of slope and wavy wall combined mixed enhancement technology is summarized. Finally, the future development of various mixed enhancement methods is prospected.