Quote:
Originally Posted by JtD
Never said that. Physics always apply. I said:
- basic principles of heat exchangers don't fully explain general aircraft engine oil temperatures
- general aircraft engine oil temperature characteristics don't fully explain Spitfire specific oil temperatures
That means, while it is comparatively easy to estimate the heat exchange in the radiator for a given set of conditions, this is just one piece of the puzzle of oil temperature calculation.
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Other aspects to be considered: coolant used; efficiency of coolant flow; thermal efficiency of engine/engine components, mechanical efficiency of same, etc etc
http://www.freestudy.co.uk/thermodynamics/t4201.pdf