Open Circuit Wind Tunnels

About Open Circuit Wind Tunnels

Designed for precision aerodynamic testing, our high-speed open circuit wind tunnels deliver exceptionally smooth, low-turbulence airflow for research, development, and educational applications. The open-loop design draws air directly from the laboratory environment, ensuring flexible installation and cost-effective operation without recirculation complexity.

Engineered for adaptability, these systems can be configured to suit constrained spaces such as low ceilings, narrow access points, or facilities with structural obstructions. From compact laboratory units to large-scale research tunnels, we offer both standard models and fully customized solutions.

Key Features

• Open circuit (non-recirculating) airflow design
• Ultra-low turbulence for high-precision measurements
• Modular construction for easy installation in restricted spaces
• Customizable geometry, speed, and test section size
• Expandable flow conditioning system

Standard Test Section Sizes

• 150 150 mm (6 6)
• 300 300 mm (12 12)
• 450 450 mm (18 18)
• 600 600 mm (24 24)
• 750 750 mm (30 30)

Custom sizes: up to 1000 1000 mm (40 40) and beyond

Technical Datasheet (Typical Ranges)

Airflow & Performance

• Airspeed range: 5 120 m/s (application dependent)
• Turbulence intensity: 0.25% (typical, with standard flow conditioning)
• Flow uniformity: 0.5 1% across test section

Contraction Section

• Contraction ratio: 6:1 12:1 (standard ~9:1)
• Profile design: 5th or 9th order polynomial contour

Flow Conditioning

• Honeycomb straightener:
• Material: Aluminium
• Cell diameter: 3 10 mm
• Length-to-diameter ratio: 6:1 10:1

         Turbulence screens:

• Standard: 2 stainless steel screens
• Expandable: up to 4 screens

Construction & Layout

• Frame: Modular steel/aluminium structure
• Test section: Clear acrylic or glass (optional)
• Installation: Custom-fit for lab constraints

Applications

• Aerodynamic research & validation
• Automotive and UAV testing
• Civil and structural wind studies
• Academic and educational labs