🚀 go-pugleaf

Does anyone have any test data on the free convection heat transfer
coefficients (or Nussult numbers) for pin-finned plates, such as those
found on electronics chassis'?

We are about to fund a research project with Brent Webb at BYU to
provide us with such data. What we have seen in the literature and heard
of in industry focuses on forced convection (current work at TI) or is
limitted in pin aspect ratio (work by Sparrow & Vemuri at UMinn).

For those interested, our work will attempt to isolate free convection
(from radiation effects), will use plates 9-12" square (hopefully), with
low delta-Ts (6-8 degC) and will use 60-100 mil pins with aspect ratios
(L/D) up to about 10. We are presently looking for ways to obtain
samples as inexpensively as possible. (We'll probably machine hex-shaped
pins by sawing plates at 3 angles).

Any inputs on available results or on our plans are appreciated.
Research results will be published in the literature and passed on over
net to any interested.

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