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Consider fluid flowing through a cylindrical pipe of diameter D = 0.0127 m and length L = 5D = 0.0635 m. The bulk velocity at the pipe inlet is U_{bulk =} 6.58 m/s. Let us consider the case where the density of the fluid is constant. Take density ρ = 1.331 kg/ m³ _and  and coefficient of viscosity _ µ = 2.34 x 10^-5 kg/(ms). The Reynolds number Re based on the pipe diameter and the bulk velocity is

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