Experimental data on the linear and nonlinear wave train development in 3D supersonic boundary layer over a 45° swept-wing at Mach number 2.5 are presented. Travelling artificial disturbances were introduced in the boundary layer by periodical glow discharge at frequencies 10 and 20 kHz. The spatial-temporal and spectral-wave characteristics of the wave train of unstable disturbances in the linear region are obtained. It is shown that the additional peaks in β'-spectra arise for both subharmonic and fundamental frequencies. The experiments indicate the presence of subharmonic resonance mechanism in 3D boundary layer at Mach number 2.5.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 27 Oct 2016|
|Event||All-Russian Conference with the School for Young Scientists Thermophysics and Physical Hydrodynamics 2016, TPH 2016 - Yalta, Crimea, Ukraine|
Duration: 19 Sep 2016 → 25 Sep 2016