Aerodium Slovenia also known as Aerodium Logatec is a 12 foot / 3.7 meter diameter open flow wind tunnel being built by Aerodium Technologies in Slovenia. The tunnel is planned to be open in mid to late 2015.
This tunnel is of a unique design. The tunnel is an open flow tunnel except unlike other open flow tunnels (see: SkyVenture Arizona) the fans sit below the chamber and use one set of turning vanes to turn the air up into a contractor and then through a vertical fight chamber. See the diagram in the photos for this tunnel for a diagram of the function of this tunnel provided by Aerodium.