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Description: Frictional pressure drop, single phase, fully developed internal flow.

Reference: Churchill, S.W. Friction Factor Equations Spans All Fluid-Flow Regimes. Chemical Engineering Journal, 84, 91-92, 1977.

Equations/Symbols:

Calculate:
Insert fluid temperature (T_f), fluid pressure (P), diameter (D), surface roughness (ε), tube lenght (L), fluid velocity (v) and press 'Calculate'.

Fluid: Water Air R134a T_f (K): Pressure (Pa): D (m):
ε (m): L (m): v (m/s):

Fluid properties: ρ=993.60 kg/m3 μ = 6.937625E-4 Pa.s	Dimensionless numbers Re=143,219.11 fDarcy=0.016680 ε/D= = 1.000000E-5	Pressure drop ΔP=82.87 Pa

Heat Transfer Research Group - HTRG
University of Sao Paulo - USP