Many things can be learned.
If you look at Radius, you should be able to see that as the flow rate increases, the pressure drop should increase relatively quickly. In a Swiftech type block, the increase wouldn't be near as dramatic.
Of course I haven't calculated it yet, but that's what I expect.
What I did do though, is allow the channels to split up, at different radius: this minimizes the overall pressure drop. If I had stuck with say, 8 channels, straight out (a la morphling1), within the same fin diameter, the pressure drop would have been greater. This was also done in order to maintain a fin-to-channel ratio between what Cathar has calculated as being ideal, which is 0.75 to 1.5. So I maximized fin efficiency, and minimized the pressure drop.
That's the lesson, for me. Of course there are many other factors in block design, so it comes down to balancing it all. My inlet is still not functional.
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