Quote:
Originally Posted by aerohead
Korff recommended that the net opening be as 'wide' as the radiator, 1/6th the radiator height, and the interconnecting, diverging ductwork be at least one radiator height in length.
To eliminate a vena contracta entry loss ( which invisibly chokes off the airflow) all sides of the opening are bell-mouthed. ( I used a 1" radius for Bonneville and highway )
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Hey aerohead!
Wowsers, thanks for the technical specifics! It turns out that I've reduplicated the wheel here. My radiator is 26" W x 12" H = 312 sq in. I found by experimentation that the lowest inlet I can safely go to is ~ 50 sq in, which lo and behold is 1/6th the height by the width. I was planning on making a 24" x 3" inlet (constrained by the 2ft piano hinge I could find) and then narrowing to around 2 inches = ~ 48 sq in. But I wanted the extra 24 sq in for extreme cases (like I drive through the desert or there is a heat wave or something).
Hmmm... this has inspired me. I'm going to ditch the hinges and go to a different design. What I've really been struggling with is how to make a rounded nose tip just like an airplane. I should stop fuddling around trying to simulate one and just get something close to one. I could probably take a 3" or 4" PVC pipe, cut it in half, and use that as the leading edge. I could probably repurpose the other sections as "wideners" for the bell mouth.
Okay. Thanks a bunch everyone. We can close this thread... I now have a clear vision of what I'm going to do. It's going to be awesome!
