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Flow Response of Active Flow Control Actuators
AIAA Journal, 2014Numerical and experimental analysis of a synthetic jet actuator in quiescent air is reported. The study focuses on the actuator itself and on the vorticity field as well as on structures that are generated by the actuator. Large eddies simulation was used for numerical analysis and phase-locked, two-dimensional microscopic-particle image velocimetry ...
Eran Arad +2 more
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Numerical simulation of the flow around a simplified vehicle model with active flow control
International Journal of Heat and Fluid Flow, 2011 Large-eddy simulation (LES) was used to study the influence and the resulting flow mechanisms of active flow control applied to a two-dimensional vehicle geometry. The LES results were validated against existing Particle Image Velocimetry (PIV) and force
Siniša Krajnovic
exaly +2 more sources
Flow control with active dimples
The Aeronautical Journal, 2007AbstractThe long-term goal is to design and manufacture optimal ‘on-demand’ vortex generators, ‘dimples’ that can produce vortices of prescribed strength and duration for the real-time control of aerodynamic flows that are either undergoing transition or are fully turbulent, attached or separating.
S. Dearing, S. Lambert, J. Morrison
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Active Control of Separated Flow
2022The performance of many objects is primarily dictated by the flow of surrounding air or water. For example, most of vehicle fuel usage is required to overcome aerodynamic drag. Conversely, the energy in flowing fluids can be harnessed as a renewable energy source.
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Actuators for Active Flow Control
Annual Review of Fluid Mechanics, 2011Actuators are transducers that convert an electrical signal to a desired physical quantity. Active flow control actuators modify a flow by providing an electronically controllable disturbance. The field of active flow control has witnessed explosive growth in the variety of actuators, which is a testament to both the importance and challenges ...
Louis N. Cattafesta, Mark Sheplak
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Active Flow Control of Wing Separated Flow
Volume 1: Fora, Parts A, B, C, and D, 2003Numerical investigations of active flow control, which can offer significant improvements to wind–turbine rotor and turbomachinery performance by suppressing detrimental effects of separated flow, are presented. Simulations of pulsating jet flow control applied on wings at low speed, high Reynolds number turbulent flow and fixed angles of incidence are
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Simulation of Active Flow Control on a Stalled Airfoil
Flow, Turbulence and Combustion, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Spalart, Philippe +3 more
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Active Control of Unsteady Cavitating Flows in Turbomachinery
Volume 2A: Turbomachinery, 2019Abstract A preliminary 2D numerical investigation of the active control of unsteady cavitation by means of one single synthetic jet actuator (SJA) is presented. The SJA has been applied to hinder the intrinsic instabilities of a cloud cavitating flow of water around a NACA 0015 hydrofoil with an angle of attack of 8° and ambient ...
de Giorgi M. G. +2 more
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Iterative design for active control of fluid flow
2001 European Control Conference (ECC), 2001Iterative controller design for planar Poiseuille flow by model unfalsification and controller redesign is the topic of the paper. The main contribution is to show that model-unfalsification-based iterative design can be useful in flow control problems.
Veres, S.M. +3 more
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Multiscale Active Flow Control
2007The physics of the multiscale patterns of flows is introduced in the first part: it is the foundation for analysis of the control of flow. Then a careful distinction is made between control as a passive mean for improving the properties of natural flows relevant to a given application, and control as a robust active tool to optimize a cost function ...
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