Features of laminar separation bubble subjected to varying adverse pressure gradients

R Kumar, S Sarkar - Physics of Fluids, 2023 - pubs.aip.org
This article describes the spatial development of a laminar separation bubble (LSB), its
transition, and eventual breakdown under the influence of adverse pressure gradients …

Exploring flow transition induced by surface-mounted riblets using large eddy simulations

I Jain, S Sarkar - Physics of Fluids, 2024 - pubs.aip.org
A well-resolved large eddy simulation is employed to study the transition of spatially
developing boundary layer when excited by distributed blade-riblets that are arranged in …

Characterizing disturbance growth and transition of laminar separation bubbles subjected to varying freestream turbulence

R Kumar, S Sarkar - Physics of Fluids, 2024 - pubs.aip.org
The spatial manifestation of a boundary layer subjected to an adverse pressure gradient for
varying freestream turbulence (FST) is discussed here through experiments and a wall …

Influence of roughness-generated streaks on laminar separation bubbles

T Jaroslawski, M Forte, O Vermeersch… - Experiments in …, 2024 - Springer
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 …

Insights into the transition of separation bubble over a rough surface at varying angles of attack

P Singh, S Sarkar, R Kumar, S Katiyar - Physics of Fluids, 2024 - pubs.aip.org
The evolution of a separated boundary layer on the rough surface in the vicinity of a leading
edge of a model airfoil is documented at varying angles of attack. Particle image velocimetry …

Boundary layer forcing on a rotating wing at low Reynolds numbers

T Jaroslawski, M Forte, JM Moschetta, ER Gowree - Experiments in Fluids, 2023 - Springer
Two separate experiments were conducted on a three-bladed NACA0012 rotor operating at
a blade tip Reynolds number ranging from 44–110× 10 3 using phase-locked infrared …

Flow instability and momentum exchange in separation control by a synthetic jet

Y Abe, T Nonomura, K Fujii - Physics of Fluids, 2023 - pubs.aip.org
This study investigates a mechanism for controlling separated flows around an airfoil using a
synthetic jet (SJ). A large-eddy simulation (LES) was performed for a leading-edge …

Unsteady load alleviation on highly flexible bio-inspired wings in longitudinally oscillating freestreams

Á Martínez-Sánchez, Á Achirica-Villameriel… - Journal of Fluids and …, 2024 - Elsevier
This study delves into the aerodynamic behaviour of a highly flexible NACA 0012 aerofoil,
drawing inspiration from avian feathers to handle a gust. We first examined unsteady flow on …

Freestream turbulence effects on low Reynolds number NACA 0012 airfoil laminar separation bubble and lift generation

M Yu, JT Hrynuk, DT Booth, N Poudel - Aerospace Science and …, 2024 - Elsevier
Laminar separation bubbles (LSB's) over the suction surface of a wing at low Reynolds
number (O (10 4)− O (10 6) based on the airfoil chord length) can significantly affect the …

Transition to turbulence on a rotating wind turbine blade at

TCL Fava, D Massaro, P Schlatter… - Journal of Fluid …, 2024 - cambridge.org
The boundary-layer stability on a section of a rotating wind turbine blade with an FFA-W3
series aerofoil at a chord Reynolds number of of the free stream velocity directed towards …