Vitaliy L. Rayz and Sally Bane
Phys. Rev. Fluids 8, 110001 (2023) – Published 16 November, 2023
Physical Review Fluids publishes a collection of papers associated with the 2022 Gallery of Fluid Motion. These award winning works were presented at the annual meeting of the APS Division of Fluid Dynamics held in Indianapolis, Indiana in November 2022.
Jets-in-supersonic-crossflow (JISCF) have many influential areas of technical applications, amongst them the field of separation control when implemented as air-jet vortex generators. We present results of a combined experiments-numerical work, where we characterize the effects of changing jet-pipe length and jet-exit velocity profiles on the jet-induced structures and the associated separation control effectiveness. The results indicate a strong influence of the state and development of the flow in the pipe on the JISCF field. Consequently, the strength and downstream longevity of streamwise vortices induced by the jets also affect the separation-control effectiveness.
