🔧 Pipe Flow & Pressure Drop Calculator
Darcy-Weisbach pressure drop with Colebrook-White friction factor, minor losses, and Moody chart visualization.
📝 Configuration
Darcy-Weisbach:
ΔP = f × (L/D) × (ρU²/2)
Colebrook-White:
1/√f = -2 log₁₀(ε/D/3.7 + 2.51/(Re√f))
Minor losses:
ΔP_minor = ΣK × (ρU²/2)
ΔP = f × (L/D) × (ρU²/2)
Colebrook-White:
1/√f = -2 log₁₀(ε/D/3.7 + 2.51/(Re√f))
Minor losses:
ΔP_minor = ΣK × (ρU²/2)
📊 Results & Visualization
Configure the inputs and click Calculate to see results.
ℹ️ About Pipe Flow
The Darcy-Weisbach equation is the most general equation for calculating pressure drop in fully developed pipe flow. Combined with the Colebrook-White equation, it accurately predicts friction factors for all flow regimes.
Key factors:
• Re < 2300: Laminar flow (f = 64/Re)
• Re > 4000: Turbulent flow (f from Colebrook-White)
• Surface roughness significantly affects turbulent friction
• Minor losses from fittings can dominate in short pipes
The Darcy-Weisbach equation is the most general equation for calculating pressure drop in fully developed pipe flow. Combined with the Colebrook-White equation, it accurately predicts friction factors for all flow regimes.
Key factors:
• Re < 2300: Laminar flow (f = 64/Re)
• Re > 4000: Turbulent flow (f from Colebrook-White)
• Surface roughness significantly affects turbulent friction
• Minor losses from fittings can dominate in short pipes