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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Vanlanduit, Steve
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Publications (12/12 displayed)
- 2024Into a rapid polymer characterization employing optical measurement systems and high-power ultrasonic excitationcitations
- 2022Corrosion monitoring on zinc electroplated steel using shortwave infrared hyperspectral imagingcitations
- 2017Dynamic 3D strain measurements with embedded micro-structured optical fiber Bragg grating sensors during impact on a CFRP couponcitations
- 2017Detection, Localization and Quantification of Impact Events on a Stiffened Composite Panel with Embedded Fiber Bragg Grating Sensor Networkscitations
- 2016Vibration Monitoring Using Fiber Optic Sensors in a Lead-Bismuth Eutectic Cooled Nuclear Fuel Assemblycitations
- 2016Effective use of transient vibration damping results for non-destructive measurements of fibre-matrix adhesion of fibre-reinforced flax and carbon compositescitations
- 2016RTM Production Monitoring of the A380 Hinge Arm Droop Nose Mechanism: A Multi-Sensor Approachcitations
- 2016Identification of pavement material properties using a scanning laser Doppler vibrometercitations
- 2016Production monitoring of a RIM automotive control arm by means of fibre optic sensors
- 2016Reconstruction of impacts on a composite plate using fiber Bragg gratings (FBG) and inverse methodscitations
- 2013Projection Moiré profilometry simulation software for algorithm validation and setup optimalisation
- 2012Experimental and computational analysis of the flow induced by a piezoelectric fan
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document
Experimental and computational analysis of the flow induced by a piezoelectric fan
Abstract
The use of piezoelectric ceramics as actuators in flapping plate systems is interesting due to the low power consumption and high energy efficiency. Fluid flow is induced by these piezoelectric fans by converting electric energy into mechanical vibrations with the use of piezoelectric patches bonded to a passive elastic plate. By applying an alternating voltage the patch will periodically start to contract and expand (Fig. 1). If the frequency of the AC voltage is equal to the first resonance frequency of the structure, a sufficiently large dynamic tip deflection can be obtained, which is required to induce an air flow by the flapping plate. A considerable increase in heat transfer could be obtained by using these piezo fans for cooling of electronic devices [1]. Another application is applying these piezoelectric oscillating mechanical systems as flapping wings for MAVs [2]. The motion of the piezo fan is determined by the actuation frequency and the modal parameters. The structural optimization of these systems, in terms of optimizing the tip deflection and efficiency, does not necessarily match the optimization of the flow induced by the oscillating wing. This flow is characterized by a coupled fluid-structure interaction. A 2D assumption was made in many past studies found in the literature [3]. However the flow behind wings with finite span is significantly more complex than the flow behind infinite span wings. In this present study experimental high speed PIV measurements are conducted on a piezoelectric flapping wing with finite span operating at 84.8 Hz in air. The structure was operated at different tip deflection amplitudes, controlled by an integrated Laser Doppler Vibrometer system in the experimental set-up. The time resolved and RMS time-averaged results for different amplitudes are compared to 2D and 3D LES CFD simulations as a validation of the numerical method. Dominant Proper Orthogonal Decomposition (POD) modes were determined to obtain the dominant flow characteristics.