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Engine
Research Building (ERB):
Heat Transfer Facilities - W-5A-2
Heat Transfer Tunnel and Probe Calibration Rig
W-5A-2
Facility Description
This facility consists of a small wind tunnel with a 6x27 inch test
section and inlet turbulence control made up of screens, flow straighteners
and contraction. Air is drawn in from the room and exits to altitude
exhaust. Maximum test section velocity is less than 150 ft/sec.
The study the effect of free stream turbulence on stagnation region
heat transfer, various turbulence generation grids can be inserted
upstream of the test section. A heat transfer model with low voltage
electric heaters can be installed in the test section. Hot wire
equipment is used to characterize the turbulence production by the
grids.
W-5A-2
Special Features
W-5A-2 shares the test cell with two other rigs, and only one
at a time can run. The researcher can safely be in the cell while
running to observe flow visualization measurements using liquid
crystals and smoke wire, in addition to hot wire and photographic
techniques. The data acquisition uses the ESCORT D system.
W-5A-2
Facility Capabilities |
| Parameter |
Operating Value |
| Inlet
air pressure |
atm |
| Inlet
airflow |
20
lb/s |
| Altitude
exhaust |
20-26
in. hg |
| W-5A-2 System Instrumentation |
| System |
Number and Type |
| ESP |
192 Ports of +/- 15 PSID, 17 PSIA Ref
32 Ports of +/- 5 PSID, Barometric Ref |
| Escort |
128 Channels
92 Available to the Customer |
| Thermocouples |
96 Type E
48 Type K |
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