Don Dunbar wrote:

Hi Pual,
Thank you for the article, it has helped me understand some of the aircraft cooling problems.
Over 20 year of aluminium fast and slow shipbuilding many of which have used keel cooling I have developed formula's for the amount of area required per HP.
One of the factors that is important in these installations was the speed of the water moving over the hull cooling surface. What is the desired air speed for the cooling system? Do you have any info on this subject.
There has been much talk with in the group in recent weeks on surface cooling but no conclusion or bright ideas have emerged.
Regards Don

I am afraid I don't Don. I am sure the data is out there somewhere.
You might try the book Kay's & London "Compact Heat Exchanges".
I think they may have some Reynolds number data.

Paul Lamar
 
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