Experimental flow control investigation over suction surface of turbine blade with local surface passive oscillation

K Koca, MS Genc, D Veerasamy, M Özden - Ocean Engineering, 2022 - Elsevier
Impact of the local flexible membrane (LFM) on aerodynamic phenomena including the
formation of a laminar separation bubble (LSB) and transition to turbulence was …

Numerical investigation of laminar–turbulent transition in laminar separation bubbles: the effect of free-stream turbulence

S Hosseinverdi, HF Fasel - Journal of Fluid Mechanics, 2019 - cambridge.org
The role of free-stream turbulence (FST) in the hydrodynamic instability mechanisms and
transition to turbulence in laminar separation bubbles (LSBs) was investigated using direct …

Steady and transient response of a laminar separation bubble to controlled disturbances

S Yarusevych, M Kotsonis - Journal of Fluid Mechanics, 2017 - cambridge.org
The steady and transient response of a laminar separation bubble to flow disturbances is
examined experimentally. Wind tunnel experiments are performed on a NACA 0012 aerofoil …

Simulation and stability analysis of oblique shock-wave/boundary-layer interactions at Mach 5.92

N Hildebrand, A Dwivedi, JW Nichols, MR Jovanović… - Physical Review …, 2018 - APS
We investigate flow instability created by an oblique shock wave impinging on a Mach 5.92
laminar boundary layer at a transitional Reynolds number. The adverse pressure gradient of …

Disturbance growth in a laminar separation bubble subjected to free-stream turbulence

T Jaroslawski, M Forte, O Vermeersch… - Journal of Fluid …, 2023 - cambridge.org
Experiments were conducted to study the transition and flow development in a laminar
separation bubble (LSB) formed on an aerofoil. The effects of a wide range of free-stream …

Direct numerical simulations of laminar and transitional flows in diverging pipes

D Vittal Shenoy, M Safdari Shadloo… - International Journal of …, 2020 - emerald.com
Purpose Fluid flows in pipes whose cross-sectional area are increasing in the stream-wise
direction are prone to separation of the recirculation region. This paper aims to investigate …

Structure and dynamics of a laminar separation bubble near a wingtip

CE Toppings, S Yarusevych - Journal of Fluid Mechanics, 2021 - cambridge.org
The three-dimensional flow topology of a laminar separation bubble forming on the suction
surface of a semispan wing with an aspect ratio of. In the inboard region of the wing, the …

Self-excited primary and secondary instability of laminar separation bubbles

D Rodriguez, EM Gennaro, LF Souza - Journal of Fluid Mechanics, 2021 - cambridge.org
The self-excited instabilities acting on laminar separation bubbles in the absence of external
forcing are studied by means of linear stability analysis and direct numerical simulation …

On the origin of spanwise vortex deformations in laminar separation bubbles

T Michelis, S Yarusevych, M Kotsonis - Journal of Fluid Mechanics, 2018 - cambridge.org
This work investigates the three-dimensional, spatio-temporal flow development in the aft
portion of a laminar separation bubble. The bubble is forming on a flat plate geometry …

Modal analysis of the laminar boundary layer instability and tonal noise of an airfoil at Reynolds number 150,000

M Sanjose, A Towne, P Jaiswal… - International …, 2019 - journals.sagepub.com
A direct numerical simulation of the flow field around a controlled-diffusion airfoil within an
anechoic wind-tunnel at 5° incidence and a high Reynolds number of 1.5× 10 5 is performed …