[HTML][HTML] Cyclist aerodynamics through time: Better, faster, stronger

F Malizia, B Blocken - Journal of Wind Engineering and Industrial …, 2021 - Elsevier
The last decades have seen an increasing interest in cycling aerodynamics, with the design
of more aerodynamic bicycles and wearable equipment such as helmets and skinsuits and …

Artificial neural networks trained through deep reinforcement learning discover control strategies for active flow control

J Rabault, M Kuchta, A Jensen, U Réglade… - Journal of fluid …, 2019 - cambridge.org
We present the first application of an artificial neural network trained through a deep
reinforcement learning agent to perform active flow control. It is shown that, in a two …

On the effect of free-stream turbulence on boundary-layer transition

JHM Fransson, S Shahinfar - Journal of Fluid Mechanics, 2020 - cambridge.org
Free-stream turbulence (FST) and its effect on boundary-layer transition is an intricate
problem. Elongated unsteady streamwise streaks of low and high speed are created inside …

Drag reduction by herringbone riblet texture in direct numerical simulations of turbulent channel flow

HOG Benschop, WP Breugem - Journal of Turbulence, 2017 - Taylor & Francis
ABSTRACT A bird-feather-inspired herringbone riblet texture was investigated for turbulent
drag reduction. The texture consists of blade riblets in a converging/diverging or …

Transition delay using biomimetic fish scale arrays

M Muthuramalingam, DK Puckert, U Rist… - Scientific Reports, 2020 - nature.com
Aquatic animals have developed effective strategies to reduce their body drag over a long
period of time. In this work, the influence of the scales of fish on the laminar-to-turbulent …

Aerodynamic performance of several passive vortex generator configurations on an Ahmed body subjected to yaw angles

H Viswanathan - Journal of the Brazilian Society of Mechanical Sciences …, 2021 - Springer
We evaluate the aerodynamic performance of several passive vortex generators (VGs)
placed on a standard Ahmed body, with a slant angle (α= 35º), subjected to different yawing …

Control of oblique-type breakdown in a supersonic boundary layer employing streaks

S Sharma, MS Shadloo, A Hadjadj… - Journal of Fluid …, 2019 - cambridge.org
The effectiveness of streak modes in controlling the oblique-type breakdown in a supersonic
boundary-layer at Mach 2.0 is investigated using direct numerical simulations. Investigations …

Control of oblique breakdown in a supersonic boundary layer employing a local cooling strip

T Zhou, Z Liu, Y Lu, D Kang, C Yan - Journal of Fluid Mechanics, 2022 - cambridge.org
Oblique breakdown in a Mach 2.0 supersonic boundary layer controlled by a local cooling
strip with a temperature jump is investigated using direct numerical simulations and linear …

Instability wave–streak interactions in a supersonic boundary layer

P Paredes, MM Choudhari, F Li - Journal of Fluid Mechanics, 2017 - cambridge.org
The interaction of stationary streaks undergoing non-modal growth with modally unstable
instability waves in a supersonic flat-plate boundary-layer flow is studied using numerical …

Influence of freestream turbulence on the flow over a wall roughness

MA Bucci, S Cherubini, JC Loiseau, JC Robinet - Physical Review Fluids, 2021 - APS
The effect of freestream turbulence on the dynamics of an incompressible flow past a
cylindrical roughness element in subcritical conditions (ie, for Reynolds numbers below the …