Equal distribution of air flow

[168MVC]

How do you ensure a 360 degree equal distribution to a tower shaped object when the input air supply is being fed through a square duct asymetrical to the tower from below?
Any help is appreciated.

 

[MintJulep]

168,

You really haven't given us much information to go on here. The answer probably is "you don't", but check out

http://www.airblender.com/

They may have something that will help.

 

[lilliput1]

Discharge to a plenum with 300 to 500 FPM velocity at the cross section and provide with perforations 360 degrees around duct. See United Sheet Metal perforated duct. The pressure drop through the perforations must be much greater than the pressure drop through the assymetric inlet to make the distribution equal. However you may have to use (4) register type diffusers, instead of perforated duct to get longer throw. You can then balance each with manual volume damper.