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November 26, 2014

November 26, 2014

Posted by **Peter** on Sunday, January 27, 2013 at 7:50am.

- Physics -
**drwls**, Sunday, January 27, 2013 at 8:05amI don't know what you mean by "cooling collision".

His "law of cooling" of a surface is an approximation,

q = A*h*(T - Tw), where

A is the area

T is the fluid temperature in the "free stream"

h is the "film coefficient" which depends upon velocity, geometry and temperatures

Tw is the wall temperature

Values of h are usually calculated from dimensional analysis of experimental data.

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