Suppression of Perforated Wall Noise in a Transonic Wind Tunnel and the Effects on Aerodynamic Data

Suppression of Perforated Wall Noise in a Transonic Wind Tunnel and the Effects on Aerodynamic Data

Tests were conducted to determine the effect of screen overlays installed on the airside test section walls for the purpose of suppressing the wall noise. Data are presented to illustrate that the screens and resulting noise reduction affected the test section longitudinal flow uniformity, plenum- s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Jacocks, J L, Parker, Jr, R L
Format: Report
Sprache:eng
Schlagworte:
Acoustics
BOUNDARY LAYER FLOW
CALIBRATION
FLOW NOISE
Fluid Mechanics
INTERACTIONS
INTERFERENCE
LPN-ARO-P32A-J5A
LPN-ARO-P32A-J9A
NOISE REDUCTION
PE65807F
PRESSURE DISTRIBUTION
REYNOLDS NUMBER
SCREENS(WOVEN MATERIALS)
SHOCK WAVES
Test Facilities, Equipment and Methods
TRANSONIC WIND TUNNELS
WALLS
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Beschreibung
Zusammenfassung:Tests were conducted to determine the effect of screen overlays installed on the airside test section walls for the purpose of suppressing the wall noise. Data are presented to illustrate that the screens and resulting noise reduction affected the test section longitudinal flow uniformity, plenum- stream calibration, wave cancellation properties of the walls, transition Reynolds number, and shock/boundary-layer interaction. In general, the effect of noise reduction on viscous phenomena was similar to that observed with decreased Reynolds number. Prepared in cooperation with ARO, Inc., Tullahoma, TN.