DARCY'S FRICTION Factor - Edubirdie

University:
Santa Fe College
Course:
PHY 2004 | Applied Physics 1
Academic year:

2024
Views:

241

Pages:

5
Author:

Jabin F.

DARCY'S FRICTION FACTOR V = C sqrt(RS₀) C = sqrt(8g/f) -> chezy's coefficient constant. C = sqrt(m/s^2 / T) = m^(1/2) / S we know hf = f l V^2 / (2 g D) f -> Darcy weisbach friction factor f' -> friction coefficient. f = 4 f' we know f' = τ₀ / (1/2 ρV^2) f/4 = τ₀ / (1/2 ρV^2) τ₀ = 1/8 f ρV^2 Q.4 Gate 2019 y = 2m 5m B = 5m So = 0.001 V = 2m/s n = ? V = (1/n) R^(2/3) S^(1/2) R = A/P = By / (B + 2y) = (5 * 2) / (5 + 2 * 2) R = 10/9 2 = (1/n) (10/9)^(2/3) (0.001)^(1/2) n = 0.017 Q.5 So = 0.0009 Q = 30 m^3/s y = 1.0 m So' = 0.0001 Q' = ? y' = 1.0m Q = (1/n) R^(2/3) S^(1/2) Q' = (1/n) R^(2/3) S'^(1/2)

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