CW-17 Facility Description
This facility is used to conduct experiments to develop fundamental understanding of the jet mixing process and to increase jet mixing efficiency. The mixing process between a jet and surrounding airflow can be enhanced through use of aerodynamic excitation. CW-17 consists of a plenum chamber, excitation spool piece, and a nozzle. The 3-ft diameter by 5-ft long plenum is supplied with either 40- or 125-psig combustion air. Each of several supply lines are controlled to automatically set and maintain a desired plenum pressure. A 300-kW electric heater is available to provide warm airflow. Using adaptor pieces, various nozzles can be mounted off the plenum chamber. A swirl generator section can also be installed as part of the plenum. The nozzle, which exhausts into the room, has an exit diameter of 3.5 in. An altitude exhaust scoop is available to catch the nozzle flow and prevent recirculation within the test cell.

CW-17 Special Features
A microphone array can be mounted at the nozzle exit to determine the output of the acoustic signal. Pitot tubes, hot wire probes, and microphones can be mounted on an XYZ table in order to survey the flow field downstream of the exit nozzle. ESCORT D data acquisition, laser anemometry, and Schlieren systems are also available.