28" x 40" Tandem Test Section Basic Research Tunnel (BART)

 

20"x 28 " Open Circuit Tunnel  

28" x 40" Tandem Test Section Basic Research Tunnel (BART)

28" x 40" Tandem Test Section Basic Research Tunnel (BART)

28" x 40" Tandem Test Section Basic Research Tunnel (BART)

Our specialty is custom design. However, we offer many “typical” sizes from 6"x6" to 33.6"x48” – price list available upon request. Contact us with your needs (size, speed, shape) and we’ll be happy to generate a quotation.

Design

All AEROLAB wind tunnels share the following basic features:

4 Contraction – Any contraction ratio is possible. However, 9:1 is a good compromise between physical size and test section turbulence levels. AEROLAB uses either a fifth, or, ninth-order polynomial to define a smooth transition between the settling chamber and the test section entrance.

4 Honeycomb Flow Straightener – High quality, aluminum, high-aspect-ratio honeycomb flow straightener supplied with all AEROLAB tunnels – both open-circuit and closed-circuit.

4Anti-turbulence Screens – All AEROLAB tunnels are supplied with two 20 x 20 stainless steel anti-turbulence screens. Also, sufficient space is provided in the settling chamber to fit an additional two screens at a later date should the customer need extremely smooth flow for sensitive experiments.

4Static Pressure Ring(s) – All tunnels are fitted with a static pressure “ring” at the entrance of the test section. This ring consists of four pressure taps – one centered on each wall. Depending upon tunnel size, an additional ring is installed immediately down stream of the anti-turbulence screens.

4Test Section – Anodized 6061 aluminum is used to construct the load-bearing frame and flanges of our AEROLAB test sections. The three standard windows – top and two hinged sides – are made of Plexiglas ®. The walls of the test section typically diverge slightly to compensate for boundary layer growth. If parallel test section walls are desired, fillets can be added to the contraction, test section, and diffuser, instead.

4Diffuser – To prevent separation in the diffuser, and hence diffuser effects in the test section, AEROLAB restricts included diffuser divergence angle to 6º.

4Fan/Blower – Depending upon the wind tunnel type and application, either an axial fan or a centrifugal blower will provide necessary power. AEROLAB uses efficient, high-quality, low-maintenance electric motors and state-of-the-art solid-state variable frequency drivers to consistently and accurately set wind tunnel speed.

4Exit Cone / Silencer – This is an option for most of our tunnels. They serve two purposes: to improve efficiency and performance and to help reduce noise to more comfortable levels.

6” x 6” “Desktop” Tunnel w/ Folding Legs
¾ hp motor, 80 mph (35.8 m/s) top speed

 

8” x 8” Tunnel w/ Castors
¾ hp motor, 58 mph (26 m/s) top speed