On the formation of three-dimensional separated flows over wings under tip effects

K Zhang, S Hayostek, M Amitay, W He… - Journal of Fluid …, 2020 - cambridge.org
We perform direct numerical simulations of flows over unswept finite-aspect-ratio NACA
0015 wings at), the tip effects retard the near-tip shedding process, which desynchronizes …

Two-and three-dimensional wake transitions of a NACA0012 airfoil

S Gupta, J Zhao, A Sharma, A Agrawal… - Journal of Fluid …, 2023 - cambridge.org
Flow transitions are an important fluid-dynamic phenomena for many reasons, including the
direct effect on the aerodynamic forces acting on the body. In the present study, two …

Vortex flow aerodynamics behind a symmetric airfoil at low angles of attack and Reynolds numbers

DF Kurtulus - International Journal of Micro Air Vehicles, 2021 - journals.sagepub.com
The low Reynolds number aerodynamics is important to investigate for micro air vehicle
applications. The current paper covers numerical simulations to present the downstream …

Wing sweep effects on laminar separated flows

JHM Ribeiro, CA Yeh, K Zhang, K Taira - Journal of Fluid Mechanics, 2022 - cambridge.org
We reveal the effects of sweep on the wake dynamics around NACA 0015 wings at high
angles of attack using direct numerical simulations and resolvent analysis. The influence of …

Linear modal instabilities around post-stall swept finite wings at low Reynolds numbers

A Burtsev, W He, K Zhang, V Theofilis… - Journal of Fluid …, 2022 - cambridge.org
Linear modal instabilities around post-stall swept finite wings at low Reynolds numbers Page 1
J. Fluid Mech. (2022), vol. 944, A6, doi:10.1017/jfm.2022.420 Linear modal instabilities around …

Bifurcations and chaos transition of the flow over an airfoil at low Reynolds number varying the angle of attack

D Durante, E Rossi, A Colagrossi - Communications in Nonlinear Science …, 2020 - Elsevier
The study of an airfoil at low Reynolds number regime was found to be a typical problem
where the inception of bifurcations leads the flow evolution from a stationary or periodic …

Laminar post-stall wakes of tapered swept wings

JHM Ribeiro, J Neal, A Burtsev, M Amitay… - Journal of Fluid …, 2023 - cambridge.org
While tapered swept wings are widely used, the influence of taper on their post-stall wake
characteristics remains largely unexplored. To address this issue, we conduct an extensive …

Unsteady aerodynamics of a pitching NACA 0012 airfoil at low Reynolds number

DF Kurtulus - International Journal of Micro Air Vehicles, 2019 - journals.sagepub.com
The present paper aims to investigate numerically small amplitude oscillation of NACA 0012
airfoil at Re= 1000. The airfoil is sinusoidally pitching around the quarter chord point with 1° …

Lift characteristics of an airfoil at low Reynolds numbers for Newtonian and shear-thinning Carreau fluids

A Raj, S Roy - Physics of Fluids, 2023 - pubs.aip.org
In the present study, we have numerically investigated Carreau and Newtonian fluid flow
over a stationary National Advisory Committee for Aeronautics 0012 airfoil using a sharp …

Intermittency patterns in the chaotic transition of the planar flow past a circular cylinder

D Durante, C Pilloton, A Colagrossi - Physical Review Fluids, 2022 - APS
The present paper investigates the planar flow past a circular cylinder for Reynolds numbers
between 1000 and 10 000. The flow is studied as a dynamical system, so the present …