OK,only need to throw out half the paper - where coolant velocity is varied.
The remainder stands.
That includes most of the above analysis.
Have edited analysis with treble ???
If the ??? is correct the consequences are a liitle difficult too digest.
It would suggest that if the spoke of 5x differential was used an error of 60%+ may be expected when comparing low fannage(0.5m/s say) with high fannage(3.5m/s).
Thought was easier to forget the whole paper than struggle with further analysis - have enough conundrums on plate.
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