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Sheet1 Moody Chart Solver J. M. Cimbala, written August 2003; latest update 05 January 2012 This worksheet enables a user to specify a Reynolds number and a roughness factor, and the Darcy friction factor for pipe flow is calculated. Change values ONLY in the yellow highlighted cells. Enter the Reynolds number: Re = 50000 Enter the dimensionless roughness factor: e/D = 0.1 Result from Colebrook equation (Moody chart): f = 0.10198 Do not mess with the hidden cells below: laminar turbulent Recritical Re e/D f f final f denom fguess G(f) G'(f) new f G(f) G'(f) new f G(f) G'(f) new f G(f) G'(f) new f G(f) G'(f) new f G(f) G'(f) new f G(f) G'(f) new f 2300 50000 0.1 0.00128 0.1019840564 0.1019840564 -3.1273514887 0.1022460666 -0.0040211469 -15.3177910123 0.1019835518 0.0000077597 -15.3769729247 0.1019840564 0 -15.3768587935 0.1019840564 0 -15.376858793 0.1019840564 0 -15.376858793 0.1019840564 0 -15.376858793 0.1019840564 0 -15.376858793 0.1019840564
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