  Monitoring the flow features over wind turbine blades is a challenging task
that has become more and more crucial. This paper is devoted to demonstrate the
ability of the e-TellTale sensor to detect the flow separation/reattachment
dynamics over wind turbine blades. This sensor is made of a strip with a strain
gauge sensor at its base. The velocity field was acquired using TR- PIV
measurements over an oscillating thick blade section equipped with an
e-TellTale sensor. PIV images were post-processed to detect movements of the
strip, which was compared to movements of flow. Results show good agreement
between the measured velocity field and movements of the strip regarding the
separation/reattachment dynamics.
