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.