Flow around a semicircular cylinder with passive flow control mechanisms

2017 ◽  
Vol 58 (3) ◽  
Author(s):  
A. M. Hamed ◽  
J. Vega ◽  
B. Liu ◽  
L. P. Chamorro
Keyword(s):  
Flow Control ◽  
Control Mechanisms ◽  
Passive Flow Control ◽  
Passive Flow

scholarly journals Passive flow control mechanisms with bioinspired flexible blades in cross-flow tidal turbines

2021 ◽  
Vol 62 (5) ◽  
Author(s):  
Stefan Hoerner ◽  
Shokoofeh Abbaszadeh ◽  
Olivier Cleynen ◽  
Cyrille Bonamy ◽  
Thierry Maître ◽  
...  
Keyword(s):  
Turbine Blades ◽  
Cross Flow ◽  
Tidal Energy ◽  
Control Mechanisms ◽  
Passive Flow Control ◽  
Turbine Efficiency ◽  
Tidal Turbines ◽  
Passive Flow ◽  
Axial Turbines ◽  
The Cost

Abstract State-of-the-art technologies for wind and tidal energy exploitation focus mostly on axial turbines. However, cross-flow hydrokinetic tidal turbines possess interesting features, such as higher area-based power density in array installations and shallow water, as well as a generally simpler design. Up to now, the highly unsteady flow conditions and cyclic blade stall have hindered deployment at large scales because of the resulting low single-turbine efficiency and fatigue failure challenges. Concepts exist which overcome these drawbacks by actively controlling the flow, at the cost of increased mechatronical complexity. Here, we propose a bioinspired approach with hyperflexible turbine blades. The rotor naturally adapts to the flow through deformation, reducing flow separation and stall in a passive manner. This results in higher efficiency and increased turbine lifetime through decreased structural loads, without compromising on the simplicity of the design. Graphic abstract

Computational design and experimental testing of a flexible bi-stable airfoil for passive flow control

2021 ◽  
Author(s):  
Anurag Bhattacharyya ◽  
Mark Bashkawi ◽  
Se Yeon Kim ◽  
Wanzheng Zheng ◽  
Theresa Saxton-Fox ◽  
...  
Keyword(s):  
Flow Control ◽  
Experimental Testing ◽  
Computational Design ◽  
Passive Flow Control ◽  
Passive Flow

Application of passive flow control techniques to attenuate the unsteady near wake of airborne turrets in subsonic flow

2021 ◽  
Vol 119 ◽  
pp. 107129
Author(s):  
Hadar Ben-Gida ◽  
Jean Stefanini ◽  
Oksana Stalnov ◽  
Roi Gurka
Keyword(s):  
Flow Control ◽  
Subsonic Flow ◽  
Near Wake ◽  
Passive Flow Control ◽  
Control Techniques ◽  
Passive Flow

Passive flow control of a stalled airfoil using a microcylinder

2017 ◽  
Vol 170 ◽  
pp. 256-273 ◽  
Author(s):  
Dahai Luo ◽  
Diangui Huang ◽  
Xiaojing Sun
Keyword(s):  
Flow Control ◽  
Passive Flow Control ◽  
Passive Flow

Experimental Analysis on a Model of a Small Ducted Wind Turbine Equipped with Passive Flow Control Devices

2021 ◽  
Author(s):  
Elena-Alexandra Chiulan ◽  
Costin Ioan Cosoiu ◽  
Andrei-Mugur Georgescu ◽  
Anton Anton ◽  
Mircea Degeratu
Keyword(s):  
Flow Control ◽  
Wind Turbine ◽  
Experimental Analysis ◽  
Passive Flow Control ◽  
Passive Flow ◽  
Flow Control Devices ◽  
Control Devices
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