Generation of first Mack modes in supersonic boundary layers by slow acoustic waves interacting with streamwise isolated wall roughness
Yinhui Liu, Ming Dong, Xuesong Wu
Abstract
This paper investigates the receptivity of a supersonic boundary layer to slow acoustic waves whose characteristic frequency and wavelength are on the triple-deck scales, and the phase speed is thus asymptotically small. Acoustic waves on these scales are of special importance as they have the interesting property that a perturbation with a magnitude of is the boundary-layer thickness.
Topics & Concepts
Supersonic speedPhysicsMechanicsBoundary layerAcoustic waveBoundary (topology)AcousticsMathematical analysisMathematicsAerodynamics and Acoustics in Jet FlowsFluid Dynamics and Turbulent FlowsCombustion and flame dynamics