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Facilities

Acoustic Chambers

The School of Mechanical Engineering has two reverberation chambers for use in sound transmission loss testing and sound aborption testing.

For sound transmission loss testing, the sample is installed in a hole in the wall between the two rooms. Sound in the source room will then pass through the test sample into the receiver room, where a traversing microphone or fixed microphones measure the sound pressure level in the room.

Source Room

The source and receiver rooms are used for transmission loss testing. These facilities are used for research, development and can be hired for use.

Source Room Specifications
Dimensions 6.085 x 5.175 x 3.355 m
Volume 105.6 m^3
Surface Area 138.5 m^2
Opening Area 9.71 m^2
Small Test Panel Opening 1100 wide x 1605 tall mm
Small Test Panel Size 1000 wide x 1505 tall mm (inside clamping frame)
Volume between chambers 9.42 m^3
Rotating Diffuser Hemi-conical shape
2.5m height
1.5m diam top
3.0m diam bottom
Swept Volume 10.31m^3

Receiver Room

The receiver room is used for acoustic transmission loss, noise reduction, insertion loss testing, as well as measurement of sound power from articles. The room as several static diffusers and a rotating diffuser which is used to better dispurse the sound in the chamber to create a uniform sound field.

Receiver Room Specifications
Dimensions 6.840 x 5.565 x 4.720 m
Volume 179.7 m^3
Surface Area 193.2 m^2 Including opening area
Opening Area 9.71 m^2
Small Test Panel Opening 1100 wide x 1605 tall mm
Small Test Panel Size 1000 wide x 1505 tall mm (inside clamping frame)
Volume between chambers 9.42 m^3
Rotating Diffuser Hemi-cylindrical shape
2.4m height
3.5m diam
Swept Volume 23.09 m^3

Anechoic Room

The anechoic room is used to measure acoustic radiation patterns from objects and when a quiet measurement environment is required. The room has aluminium floor plates that can be removed to help reduce reflections from the floor.

Anechoic Room Specifications
Dimensions 4.79m x 3.90m x 3.94m
Volume 73.6 m^3

360 Degree Tour of Anechoic Chamber

Click play, then click and drag your mouse button on the video to look around the room!

360 Degree Tour of Reverberation Chambers

Wind Tunnels

Anechoic Wind Tunnel

The anechoic wind tunnel comprises a electric fan that passes through an inlet silencer and discharges into an anechoic chamber. The walls of the chamber are lined with acoustic foam wedges and provides anechoic conditions above 250 Hz. The resulting flow that discharges into the chamber has low turbulence intensity.

The instrumentation installed in the anechoic wind tunnel includes

  • Hot wire anemometry
  • A variety of acoustic point measurement techniques
  • Two perpendicular 31 microphone planar beamforming arrays
  • Highly accurate automated traverse system
Anechoic Wind Tunnel Specifications
Dimensions 2 m x 2 m x 2 m
Test section 275 mm x 75 mm
Maximum Flow Velocity 40 m/s

Adelaide Wind Tunnel

The Adelaide Wind Tunnel is located at the Thebarton campus and is the only industrial-scale wind tunnel in SA, and the second largest wind tunnel in Australia.

Wind-engineering test section
Cross-section area 3 m x 3 m
Maximum air speed 33 m/s (120 km/h)
Boundary-layer thickness 1.2 m
Aerodynamic closed-Section specifications
Cross-section area 2.75 m x 2 m
Maximum air speed 50 m/s (180 km/h)
Turbulence intensity Less than 0.8%
Aerodynamic open-Jet specifications
Cross-section area

2.75 m x 2 m @ 50m/s

(as per closed section)

Up to 3.5 m x 5.5 m @ 15 m/s open jet working section capability

KC Wind Tunnel

KC Wind Tunnel Specifications
Low speed open return wind tunnel
Maximum flow velocity of 32 m/s
Modular design, with multiple contraction sections and test sections
Low turbulence intensity
Acoustics, Vibration and Control Research Group
Address

THE UNIVERSITY OF ADELAIDE
SA 5005 AUSTRALIA

Contact

T: +61 8 8313 5460
F: +61 8 8313 4367
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