Each wind tunnel has specific requirements for flow quality. Typical  parameters for flow quality are Flow Angularity, Temperature Uniformity,  Turbulence, Static Pressure (or Mach number) Gradient, and Noise. These parameters are controlled or influenced by the design of several features in the wind tunnel. Some typical features are: Diffusers, Heat Exchanger, Honeycombs, Nozzle, Screens, and Turning Vanes.  ASE is well versed in design of flow conditioning systems to meet the most stringent requirements.

ASE recently developed an innovative flow conditioning solution - use of a plate-fin type heat exchanger - for the Boeing Transonic Wind Tunnel upgrade project. ASE was the first wind tunnel designer to implement this type of heat exchanger in a wind tunnel. 

Plate-Fin Heat Exchanger for Boeing Transonic Wind Tunnel: ASE has applied for a US Patent on the use of plate-fin heat exchangers in wind tunnels.  Test data has shown that excellent flow quality can be achieved using a plate-fin heat exchanger without the need for honeycombs or screens.