Civil and Environmental Engineering 2224 Study Guide - Final Guide: Moody Chart, Reynolds Number, Hydraulic Diameter
5 May 2019
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Use moody chart to determine f and then general friction losses equations. Given: q, l, d, ( = / ), . Given: hl , l, d, ( = / ), . Solution is found by trial and error of two unknowns, f and v. iteration is required. Estimate f from the moody chart (a bit educated base upon experience) Lookup f from the moody chart for the corresponding value of red. Given: hl , l, q, ( = / ), . Solution is found by trial and error of three unknowns, f, v and d. iteration is required. Lookup the value of f from the moody chart using the red and /d. Check if f from 4 = f from 1. If not, repeat steps 1-4 using f from 4. Stop the repetition when f 1 = f4 to two sig figs. We will likely be given a type 2 problem.
