Dynamic stall simulation of a pitching airfoil under unsteady freestream velocity
K Gharali, DA Johnson - Journal of Fluids and Structures, 2013 - Elsevier
Abstract Effects of horizontal oscillations of the freestream velocity superimposed on a pitch
oscillating NACA0012 airfoil were investigated using Computational Fluid Dynamics (CFD) …
oscillating NACA0012 airfoil were investigated using Computational Fluid Dynamics (CFD) …
Numerical investigations on flow structure and behavior of vortices in the dynamic stall of an oscillating pitching hydrofoil
HR Karbasian, KC Kim - Ocean Engineering, 2016 - Elsevier
This study numerically investigates the behavior of vortices and flow structure in a dynamic
stall phenomenon, especially in post-stall where the flow is highly nonlinear. Computational …
stall phenomenon, especially in post-stall where the flow is highly nonlinear. Computational …
Direct numerical simulation of the flow around an aerofoil in ramp-up motion
A detailed analysis of the flow around a NACA0020 aerofoil at Re c= 2× 10 4 undergoing a
ramp up motion has been carried out by means of direct numerical simulations. During the …
ramp up motion has been carried out by means of direct numerical simulations. During the …
Enhancement of propulsive performance of flapping foil by fish-like motion pattern
HR Karbasian, JA Esfahani - Computers & Fluids, 2017 - Elsevier
In this study, the flapping foil propulsion with a novel motion pattern is numerically
investigated. The proposed motion pattern is inspired from kinematics of fish species, such …
investigated. The proposed motion pattern is inspired from kinematics of fish species, such …
Alleviating unsteady aerodynamic loads with closed-loop flow control
DR Williams, R King - AIAA Journal, 2018 - arc.aiaa.org
The practical benefits and issues related to controlling unsteady loads in gusting flows with
active flow control actuators are discussed. Recent methods used to model the response of …
active flow control actuators are discussed. Recent methods used to model the response of …
Effect of acceleration on dynamic stall of airfoil in unsteady operating conditions
In this paper the effect of accelerated flow over a moving airfoil is considered and based on
the flow field around the airfoil the dynamic stall is evaluated. In contrast to ordinary pitching …
the flow field around the airfoil the dynamic stall is evaluated. In contrast to ordinary pitching …
An investigation into vortex growth and stabilization for two-dimensional plunging and flapping plates with varying sweep
A simple analytical model for leading-edge vortex (LEV) growth is proposed and tested,
based on the transport of vorticity-containing mass through the shear-layer. The two …
based on the transport of vorticity-containing mass through the shear-layer. The two …
Modeling transverse gusts using pitching, plunging, and surging airfoil motions
Three model motions were developed to replicate the aerodynamic response of a transverse
gust. These motions included a pure plunging and two three-degree-of-freedom motions that …
gust. These motions included a pure plunging and two three-degree-of-freedom motions that …
Flow development on a flat-plate wing subjected to a streamwise acceleration
WHILE humans can mimic the kinematics of natural flyers, birds and insects are still much
more capable of controlled fight in turbulent and gusty flow conditions. To improve the flight …
more capable of controlled fight in turbulent and gusty flow conditions. To improve the flight …
The PELskin project-part V: towards the control of the flow around aerofoils at high angle of attack using a self-activated deployable flap
During the flight of birds, it is often possible to notice that some of the primaries and covert
feathers on the upper side of the wing pop-up under critical flight conditions, such as the …
feathers on the upper side of the wing pop-up under critical flight conditions, such as the …