Results 41 to 50 of about 15,679,398 (295)
Large scale separation flow control experiments within the German Flow Control Network [PDF]
, 2009 This is an overview on flow control experiments for flow separation control conducted in the DNW-NWB atmospheric low-speed wind tunnel performed within the German Flow Control Network. Emphasis is given on the experimental setup using the DLR F15 wall-to-
Wild, Jochen +9 more
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Active gaze control improves optic flow-based segmentation and steering. [PDF]
PLoS 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
Parameter study for a slatless 2D high-lift airfoil with active separation control using a URANS approach [PDF]
, 2013 The numerical investigations described in the present paper deal with active flow separation control for a 2D, 2-element high-lift airfoil. Here, the aim of the flow control application is to actively reduce or eliminate a large flow separation on the ...
V. Ciobaca, Ciobaca, Vlad
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Advances in Flow Control Methods for Pump-Stall Suppression: Passive and Active Approaches
EnergiesThis article provides a comprehensive review of key approaches to suppressing stall flow in pumps, offering insights to enhance pump performance and reliability.
Hongbo Zhao +5 more
doaj +1 more source
Large-Eddy Simulation of Flow Separation and Control on a Wall-Mounted Hump [PDF]
, 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
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Active flow control on airfoils by reinforcement learning
Ocean Engineering, 2023 Active flow control is a widespread practice for airfoil aerodynamic performance enhancement. Within active flow control, reactive strategies are very effective, but the adequate design of these strategies is often complex. This study proposes a reactive control strategy based on a Reinforcement Learning (RL) agent to effectively govern the motion of a
Koldo Portal-Porras +4 more
openaire +2 more sources
Effectiveness of active flow control for turbulent skin friction drag reduction [PDF]
, 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
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FluidsHigh-speed train aerodynamics have mainly been improved by passive design methods, such as streamlined noses, local fairings, and surface smoothing. These methods have achieved clear benefits, but several important aerodynamic problems remain difficult ...
Li Sheng +4 more
doaj +1 more source
Performance Assessment of Fluidic Oscillators Tested on the NASA Hump Model
Fluids, 2021 Flow separation control over a wall-mounted hump model was studied experimentally to assess the performance of fluidic oscillators (sweeping jet actuators). An array of fluidic oscillators was used to control flow separation.
Mehti Koklu
doaj +1 more source
Active flow separation control at the outer wing [PDF]
CEAS 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