Wavelet analysis of high-speed transition and turbulence over a flat surface

This paper presents a study of high speed boundary layers using the wavelet method. We analyze direct numerical simulation data for high-speed, compressible transitional, and turbulent layer flows orthogonal anisotropic wavelets. The wavelet-based method extraction coherent structures is applied to flow vorticity field, decomposed into incoherent contributions thresholding coefficients. show that parts flow, enstrophy spectra, are close statistics total energy incoherent, noise-like background equidistributed. Furthermore, we investigate distribution in transition regions examine correlation with near-wall pressure fluctuations. results our analysis suggest part not random “noise” correlates actual noise emanating from inside layer. could have implications regarding understanding physics development engineering models.