Results 21 to 30 of about 1,024,804 (310)

Slug flow regime in a flowline with U-shape riser

open access: yesCase Studies in Chemical and Environmental Engineering, 2022
A suitable initial point for understanding multiphase flows is a phenomenological description of the mechanism of geometric distributions or flow patterns that are observed.
Henry Tandoh   +4 more
doaj   +1 more source

Large-Eddy Simulation of Flow Separation and Control on a Wall-Mounted Hump [PDF]

open access: yes, 2009
Active flow control techniques such as synthetic jets have been successful in increasing the performance of naturally separating flows on post-stall airfoils, bluff body shedding, and internal flows such as wide-angle diffusers.
Franck, Jennifer Ann
core   +1 more source

Effectiveness of active flow control for turbulent skin friction drag reduction [PDF]

open access: yes, 2011
The effectiveness of the opposition control method proposed by Choi et al. [J. Fluid Mech. 262, 75 (1994)] has been studied using direct numerical simulations.
Chung, Yongmann M.   +3 more
core   +1 more source

A Methodology for Robust Load Reduction in Wind Turbine Blades Using Flow Control Devices

open access: yesEnergies, 2021
Decades of wind turbine research, development and installation have demonstrated reductions in levelized cost of energy (LCOE) resulting from turbines with larger rotor diameters and increased hub heights. Further reductions in LCOE by up-scaling turbine
Abhineet Gupta   +4 more
doaj   +1 more source

Effects of Key Parameters on Airfoil Aerodynamics Using Co-Flow Jet Active Flow Control

open access: yesAerospace, 2022
The Co-Flow Jet (CFJ) technique is an effective way to enhance the aerodynamics of airfoils. The present study is to comprehensively investigate the effects of CFJ key parameters, viz., the jet momentum coefficient, the injection slot location, the ...
Ruochen Wang   +3 more
doaj   +1 more source

Active Feedback Control of a Web Flutter Using Flow Control Devices

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
This paper develops a non-contact active feedback control of web flutter in a narrow passage by using movable plates set at inlet and outlet of the passage.
Yusuke HAYASHI   +2 more
doaj   +1 more source

Active Flow Control of Helicopter Rotor Based on Coflow Jet

open access: yesInternational Journal of Aerospace Engineering, 2022
When a helicopter rotor undergoes flow separation, the drag of the rotor increases substantially, as does the power demand, which seriously affects the aerodynamic performance and flight safety of the helicopter.
Jiaqi Liu   +4 more
doaj   +1 more source

Performance of Active Multicast Congestion Control [PDF]

open access: yes, 2000
This paper aims to provide insight into the behavior of congestion control mechanisms for reliable multicast protocols. A multicast congestion control based on active networks has been proposed and simulated using ns-2 over a network topology obtained ...
Marifeli Sedano   +6 more
core   +1 more source

Active gaze control improves optic flow-based segmentation and steering. [PDF]

open access: yesPLoS ONE, 2012
An observer traversing an environment actively relocates gaze to fixate objects. Evidence suggests that gaze is frequently directed toward the center of an object considered as target but more likely toward the edges of an object that appears as an ...
Florian Raudies   +2 more
doaj   +1 more source

Active flow separation control at the outer wing [PDF]

open access: yesCEAS Aeronautical Journal, 2019
Within the European project AFLoNext, one of the technological streams is dedicated to the investigation of active flow control (AFC) to increase the robustness of the wing tip design at takeoff conditions, whilst allowing the optimization of aerodynamic efficiency in cruise. AFC is used to delay the wing tip stall, which is caused by vortex breakdown,
Rosenblum, Jean-Pierre   +10 more
openaire   +4 more sources

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