Abstract
Reaction control system (RCS) has the advantages of high response speed, wide adaptability and small shape interference. In practical engineering applications, in order to achieve high-precision control under high-speed conditions, the jet usually runs only a few milliseconds. During this time, the complex wave system and vortex structure in the jet flow field have not been fully established. Therefore, it is especially significant to study the transient process of transverse jet flow under supersonic conditions for the realisation of RCS. However, there is a lack of research on the transient process of transverse jet. In this paper, the transient developing and fading process of the jet through the two-dimensional slot is studied. Based on this, more researches are carried out, including the effects of jet pressure ratio and freestream Mach number on the transient process of two-dimensional slot jet.
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