Instability evolution in a transitional hypersonic boundary layer and its effects on
aerodynamic heating are investigated over a 260 mm long flared cone. Experiments are …

Direct numerical simulations are used to study the laminar to turbulent transition of a Mach
2.9 supersonic flat plate boundary layer flow due to distributed surface roughness …

In the present study, the response of a hypersonic turbulent boundary layer at an inflow of
Ma∞= 6 and Re∞= 16· 10 6 1/m to a smooth and rough surface along a sharp cone is …

Although it is understood that surface roughness can impact boundary layer physics in high-
speed flows, there has been little research aimed at understanding the potential impact of …

The effects of periodic crosshatch roughness (k+= 160) on a Mach 4.9 turbulent boundary
layer (Re θ= 63 000) are examined using particle image velocimetry. The roughness …

Particle image velocimetry experiments were performed to study the effects of surface
roughness on a hypersonic (M ≈ 7.3 M≈ 7.3), flat-plate turbulent boundary layer. Diamond …

This dissertation examines the effects of density gradients on turbulent boundary layer
statistics and structure using Particle Image Velocimetry (PIV). Two distinct cases were …

Flight vehicles traveling at supersonic or hypersonic speeds are vulnerable to the onset of
surface roughness, which can result in changes in the state of the boundary layer ultimately …

Compressible turbulent boundary layers over a zero-pressure gradient flat plate with three-
dimensional sinusoidal roughness are simulated by direct numerical simulation. The …

This study investigates the effects of near wall disturbances in the form of roughness on a
compressible turbulent boundary layer. The studies were carried out using numerical …