Flow diverting wind tunnel

1. A wind tunnel device comprising:

a tunnel having a supply inlet and an exhaust outlet;

a first damper at the supply inlet and a second damper at the exhaust outlet;

a plurality of rotatable turning vanes positioned in the tunnel with the first damper arranged downstream of the plurality of rotatable turning vanes and the second damper arranged upstream of the plurality of rotatable turning vanes, wherein at least one rotatable turning vane comprises a recess configured to accommodate an adjacent closed rotatable turning vane of the plurality of rotatable turning vanes; and

a fan configured to circulate air through the tunnel,

wherein:

in a first configuration, the first and second dampers are biased toward a closed position and the plurality of rotatable turning vanes permit re-circulation of air through the tunnel, and

in a second configuration, the first and second dampers are biased toward an open position in which the plurality of rotatable turning vanes inhibit re-circulation of air through the tunnel.

2. The wind tunnel device of claim 1 , wherein the at least one rotatable turning vane of the plurality of rotatable turning vanes defines a curved contour configured to direct air around a corner of the tunnel.

3. The wind tunnel device of claim 2 , wherein the at least one rotatable turning vane of the plurality of rotatable turning vanes comprises an end plate that defines the curved contour, and wherein the recess is formed into the end plate.

4. The wind tunnel device of claim 1 , wherein the plurality of rotatable turning vanes are connected to one another via an elongated member configured to rotate the plurality of turning vanes in unison.

5. The wind tunnel device of claim 1 , wherein the plurality of rotatable turning vanes are spaced intermittently along a diagonal line, wherein the diagonal line bisects a tunnel interior between the supply inlet and the exhaust outlet.

6. The wind tunnel device of claim 1 , further comprising:

a supply duct associated with the supply inlet, the supply duct configured to supply air to the supply inlet, and

an exhaust duct associated with the exhaust outlet, the exhaust outlet configured to receive air from the exhaust outlet.

7. The wind tunnel device of claim 1 , wherein, in the first configuration, the plurality of rotatable turning vanes are configured to reduce wind resistance and direct air along a contour of the tunnel.

8. The wind tunnel device of claim 7 , wherein the tunnel forms a rectangular path, the contour being defined by a corner of the tunnel along the rectangular path.

9. The wind tunnel device of claim 1 , wherein, in the second configuration, the plurality of rotatable turning vanes are adapted to overlap one another to form a blockage in the tunnel between the supply inlet and the exhaust outlet.

10. The wind tunnel device of claim 1 , further comprising a temperature control unit associated with the tunnel and adapted to remove heat from air traversing through the tunnel.

11. The wind tunnel device of claim 1 , further comprising a spray particle scrubber associated with the tunnel and adapted to capture fluid droplets carried by the air traversing through the tunnel.

12. The wind tunnel device of claim 11 , further comprising a liquid trap fluidly connected to the spray particle scrubber and adapted to collect the fluid droplets captured by the spray particle scrubber and route the fluid droplets away from the tunnel for disposal.

13. A method of operating a wind tunnel comprising:

operating the wind tunnel as an open-return wind tunnel in which air enters the wind tunnel via a supply inlet and exits the wind tunnel via an exhaust outlet, the wind tunnel including a plurality of rotatable turning vanes arranged within the wind tunnel in a first position, the plurality of rotatable turning vanes inhibiting re-circulation of air through the wind tunnel in the first position, wherein at least one rotatable turning vane comprises a recess configured to accommodate an adjacent rotatable turning vane of the plurality of rotatable turning vanes;

closing a first damper at the supply inlet, the first damper arranged downstream of the plurality of rotatable turning vanes;

closing a second damper at the exhaust outlet, the second damper arranged upstream of the plurality of rotatable turning vanes;

manipulating the plurality of rotatable turning vanes into a second position in which the plurality of rotatable turning vanes permit re-circulation of air through the wind tunnel; and

operating the wind tunnel as a closed-loop wind tunnel in which air is recirculated through the wind tunnel via a fan positioned in the wind tunnel.

14. The method of claim 13 , further comprising opening the first damper and the second damper using a flow of air generated by operation of the fan.

15. The method of claim 14 , wherein each of the first damper and the second damper are biased closed via respective biasing elements, and wherein the flow of air overcomes a biasing force of the respective biasing element to open the first and second dampers.

16. The method of claim 13 , further comprising capturing fluid droplets carried by air in the tunnel using a spray particle scrubber positioned at least partially within the tunnel.

17. The method of claim 13 , wherein the operation of manipulating comprises using an electric actuator to transition the plurality of rotatable turning vanes between the first position and the second position in response to a signal from a computer controller.