I really thought a punched plate will help take care of that jet effect but as I mentioned, it caused some serious circulation near the middle part of the tunnel right downstream of the plate, anyway the paper suggested by Mr. Andrew highlighted the flow phenomena I encountered in my simulations...
Yes, it's an air dryer, the tunnel being that long is what making velocity uniformity over the trays a critical issue so as not to increase the already significant drying rate difference between the first and last tray columns, the dryer uses significant area of flat plate solar collectors as...
Thanks for your reply, the idea of a fan for each tray or may be a fan for each column is a great one, the case is critical enough for this not to be overkill. Also, the paper is very useful, thank you.
I have a rectangular duct about 1 meter wide, 1 meter high and 6 meters long, the duct is filled with columns of trays arranged horizontally, air flow enters the duct through an 8" pipe and exit through another pipe of the same size, I'd like to know the best technique to achieve almost uniform...
