RT Book, Section
T1 Active control of turbulent convective heat transfer with plasma actuators
A1 Castellanos García de Blas, Rodrigo
A1 Michelis, Theodoros
A1 Discetti, Stefano
A1 Ianiro, Andrea
A1 Kotsonis, Marios
AB We study an array of streamwise-oriented Dielectric Barrier Discharge (DBD) plasma actuators as an active control technique in turbulent flows. The analysis aims at elucidating the mechanism of interaction between the structures induced by the DBD-plasma actuators and the convective heat transfer process in a fully developed turbulent boundary layer. The employed flush-mounted DBD-plasma actuator array generates pairs of counter-rotating, stationary, streamwise vortices. The full three-dimensional, velocity field is measured with stereoscopic PIV and convective heat transfer at the wall is assessed by infrared thermography. The plasma actuator forcing diverts the main flow, yielding a low-momentum region that grows in the streamwise direction. The suction effect promoted on top of the exposed electrodes confines the vortices in the spanwise direction. Eventually, the pair of streamwise vortices locally reduces the convective heat transfer with a persistence of several outer lengthscales downstream of the actuation.
PB Springer Nature Ltd.
SN 978-3-030-80715-3  (print)
SN 978-3-030-80716-0 (online)
SN 0930-8989 (print)
SN 1867-4941 (online)
YR 2021
FD 2021-10-24
LK https://hdl.handle.net/10016/34135
UL https://hdl.handle.net/10016/34135
LA eng
NO Rodrigo Castellanos, Stefano Discetti and Andrea Ianiro have been supported by the project ARTURO, ref. PID2019-109717RB-I00/AEI/10.13039/501100011033, funded by the Spanish State Research Agency. Theodoros Michelis and Marios Kotsonis are supported by the European Research Council under StG project GloWing (#803082).
DS e-Archivo
RD 27 jul. 2024