Dynamic Stall Control by Periodic Excitation, Part 1: NACA 0015 Parametric Study

2001 ◽  
Vol 38 (3) ◽  
pp. 430-438 ◽  
Author(s):  
D. Greenblatt ◽  
I. Wygnanski
Keyword(s):  
Parametric Study ◽  
Dynamic Stall ◽  
Periodic Excitation ◽  
Stall Control ◽  
Naca 0015

Dynamic Stall Control by Intermittent Periodic Excitation

2001 ◽  
Vol 38 (1) ◽  
pp. 188-190 ◽  
Author(s):  
D. Greenblatt ◽  
D. Neuburger ◽  
I. Wygnanski
Keyword(s):  
Dynamic Stall ◽  
Periodic Excitation ◽  
Stall Control

Dynamic Stall Control by Periodic Excitation, Part 2: Mechanisms

2001 ◽  
Vol 38 (3) ◽  
pp. 439-447 ◽  
Author(s):  
D. Greenblatt ◽  
B. Nishri ◽  
A. Darabi ◽  
I. Wygnanski
Keyword(s):  
Dynamic Stall ◽  
Periodic Excitation ◽  
Stall Control

Dynamic Stall Control on a Vertical-Axis Wind Turbine Using Plasma Actuators

AIAA Journal ◽  
2014 ◽  
Vol 52 (2) ◽  
pp. 456-462 ◽  
Author(s):  
David Greenblatt ◽  
Amos Ben-Harav ◽  
Hanns Mueller-Vahl
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Dynamic Stall ◽  
Plasma Actuators ◽  
Vertical Axis Wind Turbine ◽  
Stall Control

Simulation of Flow Around a Static and Oscillating in Pitch NACA 0015 Airfoil Using URANS and DES

2004 ◽  
Author(s):  
J. Szydlowski ◽  
M. Costes
Keyword(s):  
Turbulent Flow ◽  
Numerical Simulations ◽  
Dynamic Stall ◽  
Cfd Applications ◽  
Naca 0015

This paper presents numerical simulations of the flow around a NACA 0015 airfoil at static and dynamic stall. The treatment of these configurations is a very challenging task for CFD applications. The turbulent flow around the static and in pitch oscillation airfoil is computed using different approaches: 2D RANS, 3D RANS and DES methodologies and with finer and finer meshes in order to try to reach a space converged solution. The main conclusion of the paper is that the prediction of static and all the more dynamic stall is not mature with present modeling capabilities.

Dynamic Stall Control with Impulsive Jet

2019 ◽  
Author(s):  
Taesoon Kim ◽  
Junkyu Kim ◽  
Minwoo Kim ◽  
Junseong Lee ◽  
Solkeun Jee
Keyword(s):  
Dynamic Stall ◽  
Stall Control

scholarly journals Inflatable Leading Edge-Based Dynamic Stall Control considering Fluid-Structure Interaction

2020 ◽  
Vol 2020 ◽  
pp. 1-28
Author(s):  
Shi-Long Xing ◽  
He-Yong Xu ◽  
Ming-Sheng Ma ◽  
Zheng-Yin Ye
Keyword(s):  
Lift Coefficient ◽  
Fluid Structure Interaction ◽  
Leading Edge ◽  
Dynamic Stall ◽  
Elastic Membrane ◽  
Radius Of Curvature ◽  
Structural Dynamic ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Stall Control

The inflatable leading edge (ILE) is explored as a dynamic stall control concept. A fluid-structure interaction (FSI) numerical method for the elastic membrane structure is constructed based on unsteady Reynolds-averaged Navier-Stokes (URANS) and a mass-spring-damper (MSD) structural dynamic model. Radial basis function- (RBF-) based mesh deformation algorithm and Laplacian and optimization-based mesh smoothing algorithm are adopted in flowfield simulations to achieve the pitching oscillation of the airfoil and to ensure the mesh quality. An airfoil is considered at a freestream Mach number of 0.3 and chord-based Reynolds number of 3.92×106. The airfoil is pitched about its quarter-chord axis at a sinusoidal motion. The numerical results indicate that the ILE can change the radius of curvature of the airfoil leading edge, which could reduce the streamwise adverse pressure gradient and suppress the formation of dynamic stall vortex (DSV). Although the maximum lift coefficient of the airfoil is slightly reduced during the control process, the maximum drag and pitching moment coefficients of the airfoil are greatly reduced by up to 66% and 75.2%, respectively. The relative position of the ILE has a significant influence on its control effect. The control laws of inflation and deflation also affect the control ability of the ILE.

Some factors affecting stall control with particular emphasis on dynamic stall

1999 ◽  
Author(s):  
D. Greenblatt ◽  
B. Nishri ◽  
A. Darabi ◽  
I. Wygnanski
Keyword(s):  
Dynamic Stall ◽  
Factors Affecting ◽  
Stall Control
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