Searched for: author:"Zong, H."
(1 - 11 of 11)
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Benard, Nicolas (author), Zong, H. (author), Zhang, Yang (author), Kotsonis, M. (author), Acher, Gwenael (author), Cattafesta, Louis N. (author), Bonnet, Jean-Paul (author), Moreau, Eric (author)
Active flow control is demanding for new actuation technologies as none of the actual available actuators has reached all the criterions for expecting an implementation in the coming years. Here, a new type of pulsed jet is designed and preliminary measurements of its performances in quiescent flow are conducted. Pulsed operation has been chosen...
conference paper 2020
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Zong, H. (author), Chiatto, Matteo (author), Kotsonis, M. (author), de Luca, Luigi (author)
The plasma synthetic jet actuator (PSJA), also named as sparkjet actuator, is a special type of zero-net mass flux actuator, driven thermodynamically by pulsed arc/spark discharge. Compared to widely investigated mechanical synthetic jet actuators driven by vibrating diaphragms or oscillating pistons, PSJAs exhibit the unique capability of...
review 2018
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Zong, H. (author), van Pelt, T. (author), Kotsonis, M. (author)
Abstract: An array of 26 plasma synthetic jet actuators (PSJA) is flush-mounted on a NACA-0015 airfoil model to control the leading-edge flow separation at moderate Reynolds number (Re<sub>c</sub>= 1.7 × 10 <sup>5</sup>). The stall angle of this airfoil is postponed from 15. 5 <sup>∘</sup> to approximately 22 <sup>∘</sup>, and the peak lift...
journal article 2018
document
Zong, H. (author)
In the last few decades, active flow control (AFC) technology has been developed to minimize the aerodynamic drag of transportation vehicles and maximize the propulsion efficiency of thermodynamic engines. The key of this technology is the actuators. Among all the actuators that have been proposed (i.e. fluidic, moving object, or plasma-based),...
doctoral thesis 2018
document
Zong, H. (author)
The influence of geometrical parameters on the electromechanical efficiency of the plasma synthetic jet actuator is investigated with electrical measurements and phase-locked planar particle imaging velocimetry measurements. Two actuators with changeable electrode distance are tested. The first actuator features a fixed cavity volume of 942 mm3;...
journal article 2018
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Zong, H. (author), Kotsonis, M. (author)
The performance of a two–electrode plasma synthetic jet actuator (PSJA) is investigated for a wide range of dimensionless actuation frequencies (f*) using high-speed phase-locked Particle Imaging Velocimetry (PIV) measurements. The jet-induced velocity fields in the axisymmetric plane are measured during both...
journal article 2017
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Zong, H. (author), Kotsonis, M. (author)
journal article 2017
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Zong, H. (author), Kotsonis, M. (author)
This paper experimentally investigates the interaction between a plasma synthetic jet (PSJ) and a subsonic turbulent boundary layer (TBL) using a hotwire anemometer and phase-locked particle imaging velocimetry. The PSJ is interacting with a fully developed turbulent boundary layer developing on the flat wall of a square wind tunnel section...
journal article 2017
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Zong, H. (author), Kotsonis, M. (author)
This study experimentally investigates the influence of exit orifice shape on the performance characteristics of a three-electrode plasma synthetic jet actuator. High-speed Schlieren imaging system and phase-locked two-component PIV measurements are used for flowfield characterisation in quiescent conditions. Two actuator configurations with...
journal article 2017
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Zong, H. (author), Kotsonis, M. (author)
A simplified model is established to estimate the jet exit density variation of a plasma synthetic jet actuator (PSJA) driven by a capacitive arc discharge. This model, in conjunction with phase-locked planar particle imaging velocimetry (PIV) measurements, enables the calculation of jet mechanical energy for different operating conditions....
journal article 2016
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Zong, H. (author), Kotsonis, M. (author)
An experimental characterisation study of a large-volume three-electrode plasma synthetic jet actuator (PSJA) is presented. A sequential discharge power supply system is used to activate the PSJA. Phase-locked planar particle image velocimetry (PIV) and time-resolved Schlieren imaging are used to characterise the evolution of the induced flow...
journal article 2016
Searched for: author:"Zong, H."
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