THE study of laminar-to-turbulent transition on surfaces with significant roughness levels has
had a long history motivated by the need to understand transition on realistic surfaces …

Global stability analysis and direct numerical simulation of boundary layers with an isolated
roughness element Page 1 J. Fluid Mech. (2022), vol. 949, A12, doi:10.1017/jfm.2022.749 Global …

The effect of discrete roughness elements on the development and breakdown of stationary
crossflow instability on a swept wing is explored. Receptivity to various element heights and …

Roughness-induced transition control is a key technology for aircraft design, and associated
research is useful in practical applications as well as for understanding the mechanism of …

BOUNDARY-LAYER transition over rough surfaces has been of interest for many years.
However, in spite of wide-ranging studies of roughness effects, surprisingly little is known …

Bypass transition in a boundary layer subjected to freestream turbulence and distributed
surface roughness is studied numerically. The distributed surface roughness is reproduced …

THE performance of hypersonic transportation vehicles and reentry vehicles is significantly
affected by the laminar-turbulent transition of boundary-layer flows over vehicle surfaces as …

This experimental investigation studies the impact of streaks on two-dimensional laminar
separation bubbles forming over an aerofoil. Streaks are introduced into the boundary layer …

The travelling wave instability in a channel with small-amplitude longitudinal grooves of
arbitrary shape has been studied. The disturbance velocity field is always three-dimensional …

OUNDRY-layer stability and transition of swept-wings has been an area of active research
for the last several decades as a means to improve aircraft efficiency through Laminar Flow …