Quote:
Originally Posted by Tcoat
It is an interesting perspective and the surface area would be wonderful if that was out in the open like that. Yes the sides are substantial but once enclosed in the tube the flow drawn through them would be greatly reduced since the gap between them and the tube sides is not very large. The bulk of the draw is still going to be across the end not spread evenly across the whole surface area.
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Agree with the above ^^^
Also consider the cross-section of the tube where the top of the screened box is, and the area of the top of the screen relative to *that* cross-sectional area and not relative to the total screen area. And *also* consider that with all screens clear the flow velocity in the *middle* of that area (i.e. the horizontal upper screen area) is greater vs the perimeter. Blocking out the upper horizontal screen (middle of that area) is gonna be very bad for total flow rate...