A computational model was first developed to mimic the flow distribution exiting and existing duct. Using a combination of analytical and computational tools to then improve the flow uniformity existing this large full scale air duct.

The velocity profile entering this duct was measured using thermal anemometry and found to be non-isothermal, highly three-dimensional and turbulent. Velocity variations across the duct varied was unsteady and differed by over 50 %.

Using the measured data at the inlet and outlet of the duct and CFD techniques a computational model of the duct was developed and  calibrated.

Using standard fluid mechanics analysis flow control passages were designed and optimized using the CFD model.

Modifications were introduced into the original duct and measurements of the outlet velocity verified uniformity within +/- 4%