Question

If $u$ is velocity of fluid, $ρ$ is density of fluid, $L$ is length of the pipe, $D$ is diameter of the pipe, $f$ is friction factor and $△P_1$ is pressure drop, then the equation $△P_1 = (2fu^2Lρ) ÷ △$ represents

• A. Hagen Poiseuille equation
• B. Bernoulli equation
• C. Fannings equation
• D. Reynolds equation

Answer 1

Answer: (C)

Fannings equation

Answer 2

The correct option is (C): Fannings equation