2008
DOI: 10.1016/j.jfluidstructs.2008.06.017
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Active control of flow separation over an airfoil using synthetic jets

Abstract: We perform large-eddy simulation of turbulent flow separation over an airfoil and evaluate the effectiveness of synthetic jets as a separation control technique. The flow configuration consists of flow over an NACA 0015 airfoil at Reynolds number of 896,000 based on the airfoil chord length and freestream velocity. A small slot across the entire span connected to a cavity inside the airfoil is employed to produce oscillatory synthetic jets. Detailed flow structures inside the synthetic-jet actuator and the syn… Show more

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Cited by 174 publications
(62 citation statements)
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“…You, Moin [32] studied and evaluated the effectiveness of synthetic jets as a separation control technique over an airfoil. Wu, Leschziner [33] investigated the physical processes involved in the injection of a synthetic jet in quiescent surroundings using LES.…”
Section: Governing Equationsmentioning
confidence: 99%
“…You, Moin [32] studied and evaluated the effectiveness of synthetic jets as a separation control technique over an airfoil. Wu, Leschziner [33] investigated the physical processes involved in the injection of a synthetic jet in quiescent surroundings using LES.…”
Section: Governing Equationsmentioning
confidence: 99%
“…Generally, the interval represents time periods where the surface integrals from Eqs. (3,4,5) are greater or equal to zero. Figure 1 shows the schematic view of the tested SJAs that were operated at standard room conditions (temperature 20 − 25 • C and barometric pressure 97 − 99 kPa) with air as the working fluid.…”
Section: Observed Parametersmentioning
confidence: 99%
“…The velocity profiles measured at the distance x = 0.3 mm were acquired at 14 discrete positions along the nozzle diameter and the data were used for evaluation of U 0 and the integral quantities defined by Eqs. (3,4,5).…”
Section: Data Acquisition and Hardware Setupmentioning
confidence: 99%
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“…Hybrid synthetic jets (HSJs, or non-zeronet-mass-flux jets), which were first introduced in [4][5][6], are very similar to SJs; they are generated by means of non-zero-net-mass flow in the nozzle. The applications of both, SJs and HSJs, may be found especially in boundarylayer separation control [7][8][9], jet vectoring [10], and heat transfer enhancement [11,12,6,13,14].…”
Section: Introductionmentioning
confidence: 99%