I understood the original reason for the design and agree with it. What popped in my head was a different design based on your original idea. I posted it to possibly see if my idea would even work. Sorry if was confusing on what I was proposing.
The idea about the turbulance layer was not to be at the top but in the middle of the block. Lets see if my ASCII art is still worth a damn:
[=========] <- top
[=========] <- hollowed out layer
[=========] <- turbulance layer (2 - 3mm holes)
[=========] <- hollowed out layer
[=========] <- base
(ok my ASCII art sucks)
Maybe i should ask it this way: would adding the middle turbulance layer to your design (or any WB design for that matter) increase or decress performance of the WB?
The very small foot print of your WB is something I have been looking for. That is why I am following your successes and failures. But was just wondering if by modifying your original design and increasing the core size slightly would give even better results then I may have found one of my next projects. if not then I'll keep looking.
I appreciate the time
MD
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