1. Experimental Study of Turbulence Beginning of Supersonic Boundary Layer on Swept Wing at Mach Numbers 2 – 4
- Author
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Nickolay V Semionov, Alexander D. Kosinov, and Yury G. Yermolaev
- Subjects
History ,Turbulence ,Linear stage ,Mechanics ,Instability ,Spectral line ,Computer Science Applications ,Education ,symbols.namesake ,Boundary layer ,Classical mechanics ,Mach number ,symbols ,Swept wing ,Supersonic speed ,Astrophysics::Galaxy Astrophysics ,Mathematics - Abstract
The paper is devoted to an experimental study of natural disturbances evolution and laminar-turbulent transition in a three-dimensional supersonic boundary layer on swept wing at different Mach numbers. Characteristic zones of disturbances evolution are determined. It is found that for Mach numbers 2 and 2.5 measurements were performed in the region of linear stage of disturbances evolution, and the experimental data can be compared with the results of the calculations on linear stability theory. Oscillograms, amplitude-frequency spectra, pulsation profiles and statistical diagrams of natural fluctuations are obtained. Secondary instability of supersonic boundary layer on swept wing is under consideration
- Published
- 2011
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