Results 31 to 40 of about 1,627 (278)

Survey of control techniques to alleviate repercussions of shock-wave and boundary-layer interactions

open access: yesAdvances in Aerodynamics, 2022
Highlights 1. Shock/Boundary-Layer Interactions (SBLIs) and their consequences in high-speed aircraft are reviewed. 2. Various active and passive control strategies that have been used to mitigate the effects of SBLI are addressed. 3.
Tamal Jana, Mrinal Kaushik
doaj   +1 more source

Computational Modelling of Rectangular Sub-Boundary Layer Vortex Generators [PDF]

open access: yes, 2018
Vortex generators (VGs) are increasingly used in the wind turbine manufacture industry as flow control devices to improve rotor blade aerodynamic performance. Nevertheless, VGs may produce excess residual drag in some applications.
Barambones Caramazana, Oscar   +4 more
core   +3 more sources

Visible-broadband Localized Vector Vortex Beam Generator with a Multi-structure-composited Meta-surface

open access: yesNanomaterials, 2019
We demonstrate a vortex beam generator meta-surface that consists of silver structures and graphene layers. The miniature material is just a few microns in size and the working part is only a few hundred nanometers thick.
Zhuo Yang, Dengfeng Kuang
doaj   +1 more source

Active flow control using high frequency compliant structures [PDF]

open access: yes, 2001
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/77267/1/AIAA-2001-4144-449 ...
Geister, Donald   +4 more
core   +1 more source

An Adaptive Structures Electro-mechanical Device for Dynamic Flow Control Applications [PDF]

open access: yes, 2004
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76818/1/AIAA-2004-1815-582 ...
Geister, Donald   +4 more
core   +1 more source

Micro-Ramps for Hypersonic Flow Control

open access: yesMicromachines, 2012
Shock/boundary layer interaction (SBLI) is an undesirable phenomenon, occurring in high-speed propulsion systems. The conventional method to manipulate and control SBLI is using a bleed system that involves the removal of a certain amount of mass of the ...
Konstantinos Kontis   +3 more
doaj   +1 more source

Active Flow Control Using High-Frequency Compliant Structures [PDF]

open access: yes, 2004
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76783/1/AIAA-111-490 ...
Carl P. Tilmann   +10 more
core   +1 more source

Current state and future trends in boundary layer control on lifting surfaces [PDF]

open access: yes, 2022
Successful flow control may bring numerous benefits, such as flow stabilization, flow reattachment, separation delay, drag reduction, lift increase, aerodynamic performance improvement, energy efficiency increase, shock delay or weakening, noise ...
Griffin, Kevin Patrick   +2 more
core   +2 more sources

Experimental Characterization of Micro Vortex Generators in Low Speed Flows [PDF]

open access: yes, 2021
In this study, we present the experimental results of the characterization of micro-ramp type Micro Vortex Generators (MVGs) in low-speed flows. The undisturbed boundary layer profile was measured by means of Hot-Wire Anemometry.
Abdulrahim, Anas   +4 more
core  

Active load control techniques for wind turbines. [PDF]

open access: yes, 2008
This report provides an overview on the current state of wind turbine control and introduces a number of active techniques that could be potentially used for control of wind turbine blades.
Berg, Dale E.   +2 more
core   +3 more sources

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