The quest for reductions in fuel consumption and CO 2 emissions in transport has been a
powerful driving force for scientific research into methods that might underpin drag-reducing …

Spanwise wall oscillation has been extensively studied to explore possible drag control
methods, mechanisms and efficacy–particularly for incompressible flows. We performed …

Spanwise wall oscillation is an easily implemented active control scheme. It can delay the
transition to turbulent flows in incompressible boundary layers under appropriate control …

The ability of streamwise-travelling waves of spanwise velocity to reduce the turbulent skin-
friction drag is assessed in the compressible regime. Direct numerical simulations are …

A planar duct flow configuration with a cross-flow injected from a longitudinal slit close to the
upper wall of the duct is studied by using a direct numerical simulation approach to explore …

Direct numerical simulations of a turbulent channel flow developing over convergent–
divergent (C–D) riblets at a Reynolds number of R eb= 2800 are presented. It is found that …

Direct numerical simulations of a turbulent channel flow developing over convergent–
divergent (C–D) riblets are performed at a Reynolds number of Re b= 2800, based on the …

Active turbulence control has been pursued continuously for the last decades, striving for an
altered, energetically more favorable flow. In this article, our focus is on a promising method …

For the purpose of turbulence drag reduction, a velocity-temperature coupled control method
is proposed based on the velocity boundary layer control and the thermal boundary layer …

This work investigates spanwise wall oscillation (SWO) as a method to preferentially
enhance heat transfer over drag in turbulent channel flow. Direct numerical simulations at …