The wake behind a simpli¯ed model of a generic aircraft (the SWIM model) is measured
in the Low Speed Low turbulence wind tunnel (LSL) at Delft University of Technology.
Two measurement techniques have been used in order to qualitatively and quantitatively
measure the wake, i.e. stereoscopic particle image velocimetry (Stereo PIV) and a 5 hole
probe (5HP). Furthermore balance measurements have been carried out over a range of
con¯gurations for later comparison purposes. The goal of the wake measurements is to
give a comparison between the two measurement techniques.
The 5HP measurements are processed using a windows based program called Pressure
Field Visualisation. This program calculates vector ¯elds from the input pressure data
and has several exporting options. The Stereo PIV measurements are correlated using
DaVis 7.3 using a window size of 16 x 16 pixels with 50% overlap.