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Unformatted text preview: BIL108E IntroductiontoScientificandEngineeringComputing Homework2 Spring09 Writeamfilefunctionthattakes/DandReasinputsandreturnsthevalueoffthat satisfiestheColebrookequation / D 2.51 1 = -2log 10 + 3.7 Re f f where f is the Darcy friction factor, /D is the relative roughness of the pipe material, and Re is the Reynolds number based on the pipe diameter D. An initial guessattherootcanbeobtainedfrom 6.9 / D 1.11 f = 1.8log 10 + Re 3.7 WhichisanapproximateformulaforthefthatsatisfiestheColebrookequation.Find fforthefollowingcombinationsof/DandRe CRN20583 /D=0, Re=5000 CRN20584 /D=0.0001, Re = 3 105 CRN20585 /D=0.0001, Re = 5 107 CRN20586 /D=0.03, Re = 1 104 CRN20587 /D=0.01, Re = 3 105 CRN20588 /D=0.001, Re = 3 105 CRN2285922939 /D=0.006, Re = 1 104 -2 ...
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This note was uploaded on 05/12/2010 for the course MATH 123 taught by Professor Sait during the Spring '09 term at Istanbul Technical University.
- Spring '09