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Small Boundary Layer Wind Tunnel

The Small I.F.I. Boundary Layer Wind Tunnel has a test section cross section area of 1.78 m x 0.9 m; the wind speed above the boundary layer may be varied continuously up to a max speed of 25 m/s. The atmospheric wind flow may be simulated in the test section by using Counihan-turbulence generators and various surface roughness elements. The model scale of the wind flow is in the range of 1:250 through 1:800. Wind loads on buildings are determined according to the guidelines of the German Wind Engineering Society (WTG) as recommended e. g. in the German wind loading standard DIN 1055-4:2005-03.

A turntable of 1.5 m diameter is fitted in the test section. The measuring equipment includes a modern online pressure measuring system and a three-dimensional probe traversing mechanism. The wind tunnel is fitted with a special sand trap for sand erosion studies. A mirror fitted above the test section enables the monitoring and documentation of the surface flow field using the sand erosion technique without distortions.