The Boundary Layer Wind Tunnel is a closed-circuit wind tunnel capable of generating wind speeds up to 110 mph. It has an aerodynamic section and a boundary layer section. The boundary layer section is 6 ft. wide and 4 ft. high, and has 58 feet of upstream fetch for development of desired boundary layer flow.
Major instruments available in the wind tunnel include Cobra probes, force transducers, laser displacement sensors and a Scanivalve system for wind, displacement, force and pressure measurements, respectively. The wind tunnel is also equipped with a particle image velocimetry system and a smoke generator for flow visualization.
Testing has included wind-induced vibration of cables on cable-stayed bridges, traffic signal support structures and evaluation of wind loading on sign structures.
(Above)- The main fan that runs the NWI Wind Tunnel platform is exposed during renovation and relocation from general campus.
The boundary wind tunnel at TTU NWI research facilities.
A section model of stay cable tested in the wind tunnel.