Experimental study of the blowing impact on a hot turbulent boundary layer

G. Brillant (1, 2) , S. Husson (2) , F. Bataille (2)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
2 CETHIL - Centre d'Energétique et de Thermique de Lyon

We present an experimental study of non-isothermal blowing through a porous at plate using hot and cold wires anemometry. The calibration procedure is presented, taking into account the inluence of the temperature. King-s law coefficients are determined and a cosinus method is employed to calibrate the angle of the cross wires. A first set of measurements permits to investigate the inuence of the temperature on the hot wire and the Seebeck effect on the cold wire. The experimental results are presented. We observe that blowing has a strong influence on the velocity and temperature profiles as well as on the velocity-velocity and velocity-temperature correlations and on the ow statistics. The velocity and temperature spectra are also given, showing that their slopes are modified by the blowing.

Mots clés: hot and cold wires anemometers; non-isothermal blowing; turbulent boundary layers; velocity-temperature correlations

Domaines: Analyse numérique [cs.NA]; Physique Nucléaire Expérimentale [nucl-ex]; Thermique [physics.class-ph]

G. Brillant, S. Husson, F. Bataille. Experimental study of the blowing impact on a hot turbulent boundary layer. International Journal of Heat and Mass Transfer, 2006, 51 (7-8), pp.1996-2005. ⟨10.1016/j.ijheatmasstransfer.2007.06.022⟩. ⟨cea-02360120⟩