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Flow field visualization and input waveform optimization for a linear plasma synthetic jet actuator

Sterl, S.H. and Ommeren, C.E. van (2012) Flow field visualization and input waveform optimization for a linear plasma synthetic jet actuator.

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Abstract:The performance of a linear plasma synthetic jet actuator (L-PSJA) has been experimentally investigated as a function of the input wave train pulsing frequency and duty cycle. Visualization of the induced velocity pro�les has been performed using Particle Image Velocimetry. The used PSJA design consisted of two horizontally separated, exposed copper electrodes mounted on a plate of Duran glass of 2 mm thickness, with a third, grounded electrode on the other side of this plate. The horizontal gap distance between either of the exposed electrodes and the lower electrode was zero. The input wave train amplitudes were in the range of kilovolts. Analysis of the velocity pro�les reveals that the actuator behaviour shows no dependence on pulsing frequencies in the range 30 Hz to 70 Hz. Furthermore, a signi�cant change in actuator behaviour as a function of duty cycles in the range 20% to 65% has not been observed. The latter indicates an opportunity for reducing energy costs in future industrial applications of PSJA devices. Maximum values of vertical velocities in the jet, and vertical velocity ux above the actuator, were in almost all cases recorded at distances between 50 mm and 90 mm above the actuator surface. All measured maximum velocities were in the range 0.11 ms
Item Type:Essay (Bachelor)
Faculty:ET: Engineering Technology
Subject:33 physics
Programme:Mechanical Engineering BSc (56966)
Link to this item:http://purl.utwente.nl/essays/62909
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