Quote:
Originally posted by unregistered
be more general
perhaps
surface texture + heat convection (rate)
or so
anything interesting, post it eh ?
- there are even specific shapes that are better (inclined chevrons)
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I've been googling till my brain is raw. I've found stuff discussing surface roughness from the scale of mountains down to about 3mm. Nothing discussing surface roughness on the scale of a sandblasted surface. (0.2-0.3mm RMS at a guess?)
Found a fair amount on flat plate heat exchangers when I threw "chevron" into the mix, but again, feature size was much greater than a sandblasted surface.
I don't know how this stuff scales, so I don't know if there is much relevance to the data on larger scale textures.