Effects of porous walls on near-wall supersonic turbulence
Yongkai Chen, Carlo Scalo
Abstract
Modification to the structure of wall-bounded turbulence due to the presence of porous walls has been investigated in the low and high supersonic regime. For sufficiently high degrees of wall permeability, streamwise-traveling surface waves are triggered and stay confined in the buffer layer region. These waves yield a sinusoidal modulation of the near-wall turbulent ejection and burst events.
Topics & Concepts
Supersonic speedTurbulenceMechanicsPorosityMaterials sciencePhysicsPorous mediumComposite materialFluid Dynamics and Turbulent FlowsAerodynamics and Acoustics in Jet FlowsWind and Air Flow Studies