Zero Pressure Gradient Flat Plate Boundary Layer Experiments Using Synchronized PIV and a Hot Wire Anemometry Rake

Zero pressure gradient flat plate boundary layer experiments have been performed in the 20 meter long test section of the Laboratoire de M\'{e}canique de Lille, LML, wind tunnel. Measurements were carried out at Re$_{\theta}=$10 000 and Re$_{\theta}=$20 000 using synchronized PIV and a hot wire anemometry rake. The boundary layer thickness at the measurement location was about 30 cm. A hot wire rake of 143 probes was placed in the test section of the wind tunnel to provide the time history of the boundary layer. 2 stereo PIV systems in the wallnormal-spanwise (YZ) plane, and 1 stereo PIV system to record in the streamwise-wallnormal (XY) were used. One high repetition PIV system was used in streamwise-spanwise (XZ) plane. The sampling frequency of the XZ PIV system was 3000 VF/s at Re$_{\theta}=$20 000 and 1500 VF/s at Re$_{\theta}=$10 000.