Abstract
•The behaviors of the air jet impinging a heated plate are examined experimentally.•Two techniques are used: Particle Image Velocimetry (PIV) and the Laser Doppler Velocimetry (LDV).•The experimental data are found to be in good agreement with experimental data obtained by Baydar (1999).•The influences of Reynolds number, the height between the nozzle and the plate and the temperature surface are investigated.•The different regions of the jet impinging a plate are shown and described in details.
In this study, the flow and heat transfer characteristics of a round air jet have been experimentally investigated in details using two techniques: Particle Image Velocimetry (PIV) and the Laser Doppler Velocimetry (LDV). The measurement of the mean velocity components are compared, and agree well with the experimental data obtained by Baydar (1999). The distributions of the velocity, turbulence quantities and temperature profiles are analyzed in the main characteristic regions of the jet where the heat transfer occurs. Parametric variations were conducted to produce information about the influences of the Reynolds number (Re = 1000, 2000, 3000), the distance between the pipe exit and the flat impingement plate (h/d = 1 and h/d = 2) and the temperature of the plane (Tp = 22 °C, 54 °C, 96 °C) on the impinging jet flow field.