Compressible unsteady Görtler vortices subject to free-stream vortical disturbances

• Published in: Journal of fluid mechanics Vol. 867; pp. 250 - 299
• Main Authors: Viaro, Samuele, Ricco, Pierre
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 25.05.2019
• Subjects: Asymptotic methods; Boundary conditions; Boundary layers; Compressibility; Computational fluid dynamics; Computer simulation; Concave walls; Decay rate; Diffusion layers; Disturbances; Eigenvalues; Fluid flow; Fluid mechanics; Growth rate; JFM Papers; Mach number; Perturbations; Rivers; Stabilizing; Temperature; Theoretical analysis; Thickness; Velocity; Vortices; Wavelength; Wavelengths; compressible boundary layers; boundary layer receptivity

The perturbations triggered by free-stream vortical disturbances in compressible boundary layers developing over concave walls are studied numerically and through asymptotic methods. We employ an asymptotic framework based on the limit of high Görtler number, the scaled parameter defining the centri...