Shock-Wave Structure of Supersonic Jet Flows

• Main Authors: Valery Zapryagaev, Nikolay Kiselev, Dmitry Gubanov
• Format: Article
• Language: English
• Published: MDPI AG 2018-06-01
• Series: Aerospace
• Subjects: supersonic underexpanded jet; nozzle; Mach disk; shock wave; streamwise vortical structures; turbulent mixing; aeroacoustics
• Online Access: http://www.mdpi.com/2226-4310/5/2/60

In the present paper, we give a brief overview of the studies of supersonic jet flows which were performed recently with the aim of gaining experimental data on the formation of the shock-wave structure and jet mixing layer in such flows. Considerable attention is paid to a detailed description of discharge conditions for supersonic jets, to enable the use of measured data for making a comparison with numerical calculations. Data on the 3D flow structure in the mixing layer of the initial length of a supersonic jet are reported. Scientific interest in this phenomenon is due to its practical significance in studying the possibility of intensifying the mixing process as well as in studying the sound-generation process.