Numerical study of synthetic jet actuator effects in boundary layers

Mello, Hilton C. de M.; Catalano, Fernando Martini; Souza, Leandro Franco de

doi:10.1590/s1678-58782007000100006

Cited by 8 publications

(4 citation statements)

References 23 publications

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“…Modeling the diaphragm as a moving wall with a profile defined by an equation has also been achieved with some success [19]. Some researchers have omitted the cavity and nozzle to simplify computations and focus on the exterior flow [48][49][50]. Some researchers have employed a more realistic multiphysics approach incorporating piezoelectricity and structural mechanics [27][28][29][30].…”

Section: Diaphragmmentioning

confidence: 99%

Multiphysics Modeling of a Synthetic Jet Actuator in Operation

Butler,

Ekmekci,

Sullivan

2024

Actuators

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Active flow control is a promising technology for reducing noise, emissions, and power consumption in various applications. To better understand the performance of synthetic jet actuators, a computational model that couples structural mechanics with electrostatics, pressure acoustics, and fluid dynamics is needed. The model presented here was validated against experimental data and then used to investigate the fluid behavior inside and outside the synthetic jet actuator cavity, the impacts of thermoviscous losses on capturing the acoustic response of the actuator, and the viability of different modeling methods of diaphragms in computational simulations. The results capture the feedback from the fluid onto the diaphragm and highlight the need for careful acoustic modeling.

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Section: Diaphragmmentioning

confidence: 99%

Multiphysics Modeling of a Synthetic Jet Actuator in Operation

Butler,

Ekmekci,

Sullivan

2024

Actuators

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show abstract

Section: Diaphragmmentioning

confidence: 99%

Multiphysics Modeling of a Synthetic Jet Actuator in Operation

Butler,

Ekmekci,

Sullivan

2023

Preprint

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Active flow control is a promising technology for reducing noise, emissions, and power consumption in various applications. To better understand the performance of synthetic jet actuators, a computational model that couples structural mechanics with electrostatics, pressure acoustics, and fluid dynamics has been needed. The model presented here has been validated against experimental data and then used to investigate the fluid behavior inside and outside the synthetic jet actuator cavity, impacts of thermoviscous losses on capturing the acoustic response of the actuator, and viability of different modeling methods of diaphragms in computational simulations. The results capture the feedback from the fluid onto the diaphragm and highlight the need for careful acoustic modeling.

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“…Overall, a variety of numerical and experimental investigations had already been carried out to explore the mechanisms of a synthetic jet on improving the maximum lift of airfoil as well as the stall angle [23][24][25][26] . There were some consensuses regarding the parametric analyses of jet parameters, such as the influences from jet momentum coefficient, location of jet and excitation frequency.…”

Section: Openmentioning

confidence: 99%

Wind-tunnel tests of synthetic jet control effects on airfoil flow separation

Zhao

Chen

2022

Sci Rep

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To find out the comprehensive principles of synthetic jet control effects on airfoil stall characteristics, fundamental contrastive wind-tunnel tests were conducted systematically. By using six-component balance, Particle Image Velocimetry (PIV) technology and boundary layer probe, the measurements of model aerodynamic forces, the whole velocity field over airfoil and velocity profiles in the boundary layer were conducted, respectively. Based upon the experimentally parametric analyses of synthetic jet control on airfoil, it is concluded that the incline angle of synthetic jet has an important impact on both the flow in boundary layer and aerodynamic forces of airfoil. A tangential jet inject energy and accelerate the velocity of flow in inner boundary layer thus has a better control effects on delay stall of airfoil when the momentum coefficient of jet is relatively large, and the normal jet helps to enlarge the thickness of boundary layer which is proved to have better control effects on flow separation control and improving the aerodynamic characteristics of airfoil when the momentum coefficient of a jet is relatively small.

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Numerical study of synthetic jet actuator effects in boundary layers

Cited by 8 publications

References 23 publications

Multiphysics Modeling of a Synthetic Jet Actuator in Operation

Multiphysics Modeling of a Synthetic Jet Actuator in Operation

Multiphysics Modeling of a Synthetic Jet Actuator in Operation

Wind-tunnel tests of synthetic jet control effects on airfoil flow separation

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