CW-7 Facility Description
This facility conducts experiments to determine the important mechanisms influencing the laminar-turbulent transition process and heat transfer in high disturbance environments such as in gas turbine engines. The facility is a low-speed, closed-loop wind tunnel; no central services are required. The main components of the tunnel include a blower, flow conditioning and turbulence grids, 2-D contraction nozzle, bleed scoops, test section with heated surface, diffuser, air heater, air filter, and air cooler. The test section is 27- by 6 in. and 60-in. long. The air velocity, temperature, and pressure gradient can be controlled in the tunnel.

CW-7 Special Features
CW–7 has an ESCORT D data system along with a dual channel FFT with 1024-point, 12-bit/A/D conversion. This facility also utilizes a waveform recorder for instantaneous velocity and temperature readings.