VELOCITY DATA

2nd AIAA CFD High Lift Prediction Workshop

Partical Image Velocimetry (PIV) data were taken at the low Reynolds number condition of Re_MAC=1.35 million in the B-LSWT (Airbus Low Speed Wind Tunnel in Bremen). This planar data only included the U (streamwise) and W (up) components of velocity. The component in the y-direction was not measured.

Included here are data taken at three different y-planes: 246.386 mm, 979.596 mm, and 1223.999 mm. Three different angle-of-attack conditions are included: AoA=7 deg, 18.5 deg, and 21 deg. The PIV windows are shown in the following figures.
 

 

 

IMPORTANT NOTE: The PIV data are not valid near the walls. There are also occasional "dropped spots" of bad data. The given x and z locations of the PIV planes are believed to be accurate to within +-2 mm. The PIV velocity data accuracy is not known.

Data Files (Tecplot-readable block format, see Reading_tecplot.txt):

Download all the PIV data in one gzipped tar file: DataPIV_v2.tar.gz.

PIV velocity data above are given in m/s. To nondimensionalize by "freestream" velocity, divide by 60 m/s (see Additional Experimental Info page). As a convenience, the following files contain extracted PIV velocity (nondimensionalized by "freestream") at or near the same lines requested for the workshop:

• exp_vel_nondim_a7.dat
• exp_vel_nondim_a18.5.dat
• exp_vel_nondim_a21.dat

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Responsible NASA Official: Christopher Rumsey
Page Curator: Christopher Rumsey
Last Updated: 03/26/2013