In this paper, an experimental measurement of the f
low 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 highly-
resolved 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 analy
sis 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 mode
s (6 modes). This spatial and temporal
filtering of the force fields remains faithful to t
he 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 forc
es. The strong positive EHD force developing
in the glow regime of the DBD plasma discharge is v
isualized in a time-resolved manner. This
positive force is immediately followed by a strong
negative volume force probably caused by the
local flow deceleration.