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Harrell's "funnel" To The Colebook-White Solution.




This is a PDF file with some tables and plots, to show visually how my method works. I call it a funnel, because the procedure quickly guides to maximum accuracy. You will see that after step 2, the accuracy will be amazing. I already knew the solution to the Re and Rr would give 1/sqrt(f) about 4, so I plotted initial guesses of from -4 (that is a negative 4) to 12 to show how the funnel of my procedure leads to the maximum accuracy.

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Bobby Strain
May 23 2012 03:27 PM
So what is wrong with direct substitution? It solves in less than the wink of an eye.
Bobby
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