Title :
Schlieren Imaging of the Aerodynamic Flow Field Induced by a Paraelectric Electrohydrodynamic (EHD) Plasma Actuator
Author :
Nourgostar, Sirous ; Roth, J. Reece
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN
Abstract :
Schlieren imaging methods respond to density gradients in gases and are used in aerodynamic research to visualize the structure of atmospheric pressure flow fields. We have used this method to study the flow induced in atmospheric pressure air by electrohydrodynamic body forces generated by a single paraelectric plasma actuator energized in the filamentary mode of operation. The schlieren images show the absence of significant vertical flow and also show an induced boundary layer flow no more than a few millimeters thick.
Keywords :
aerodynamics; boundary layers; electric actuators; flow control; flow visualisation; light interferometry; plasma devices; aerodynamic flow field; atmospheric pressure flow fields; boundary layer flow; electrohydrodynamic body forces; filamentary mode; paraelectric electrohydrodynamic plasma actuator; schlieren imaging; Actuators; Aerodynamics; Aircraft; Atmospheric-pressure plasmas; Electrohydrodynamics; Plasma applications; Plasma density; Plasma diagnostics; Plasma measurements; Visualization; Active flow manipulation; OAUGDP; atmospheric pressure plasma; electrohydrodynamic body force; filamentary discharge; flow visualization; induced airflow; negative corona; plasma actuator; schlieren imaging; streamers;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.928861
