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to determine the frictional head loss in pipes h can be determined from the equati L V2 D 2g ipe length in m, D is
to determine the frictional head loss in pipes h can be determined from the equati L V2 D 2g ipe length in m, D is the pipe diameter in m and Where Vis the mean flow velocity in m/s, L is the pipe length in m, b is the pipe diameter in m and g is the acceleration of gravity in m/s2.f is the friction coefficient and can be determined from any of the following explicit empirical formulas, 1.11 6.9 Haaland 1983 e/D 5.0452, ((E/D)1.1098 5.8506 n2 3.7065 Re.8257 Re8981 +Reo.8981) =1_2 log!3.7065 __Re_ log( 2l0g0R log 2.8257 Chen (1979) 5.02 loo (e Re 108D Re 3.7 Re 5.02 log (e/D+13))12-2 /D Zigrang, Sylvester (1982) /D5.3326 0.9345) 12-2 Romeo, Royo, Monzan (2002) E is the pipe roughness in m, 5.0272 10 3.827 3.7065 Re log Re 3.7 4 208.82 + Re p, is logio, Re is the dimensionless Reynolds number Re and v is the kinematic viscosity in m2/s. e a program in a script file HW1P2.m to determine the frictional head loss hi in m for the following data, V = 2065 m/s, L = 26.667 m, D - 10-6 m2/s. Units are given only to verify the dimensional homogeneity of the equation. 0.15 m, g = 9.81 m/s, e 0.00036 m, and v = 1.02
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