Imperial College London

DrSylvainLaizet

Faculty of EngineeringDepartment of Aeronautics

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 5045s.laizet Website

 
 
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Location

 

339City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Benard:2017:10.2514/6.2017-1579,
author = {Benard, N and Laizet, S and Moreau, E},
doi = {10.2514/6.2017-1579},
title = {PIV-based dynamic model of EHD volume force produced by a surface dielectric barrier discharge},
url = {http://dx.doi.org/10.2514/6.2017-1579},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - CPAPER
AB - © 2017 by N Benard. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. In this paper, an experimental measurement of the flow produced by a surface DBD plasma actuator has been conducted. One original aspect of these measurements by particle image velocimetry is the high acquisition rate for a PIV system (20 kHz). By using these highlyresolved flow measurements, the fluid flow velocity is used to estimate the spatial and temporal evolution of the EHD volume force. A reduced order model of this force has been constructed by proper orthogonal decomposition. Based on the analysis of the time-resolved expansion coefficients and their associated spatial modes, it is shown that the volume force can be reconstructed by using a limited number of POD modes (6 modes). This spatial and temporal filtering of the force fields remains faithful to the original data and it will help in view of an implementation of such a source term in a numerical solver. The resulting dynamic model shows an alternation of positive and negative volume forces. The strong positive EHD force developing during the glow regime of the DBD plasma discharge is visualized in a time-resolved manner. This positive force is immediately followed by a strong negative volume force probably caused by the local flow deceleration.
AU - Benard,N
AU - Laizet,S
AU - Moreau,E
DO - 10.2514/6.2017-1579
PY - 2017///
TI - PIV-based dynamic model of EHD volume force produced by a surface dielectric barrier discharge
UR - http://dx.doi.org/10.2514/6.2017-1579
UR - http://hdl.handle.net/10044/1/43972
ER -