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Description: Heat transfer coefficient for external flow over long cylinders.

Reference: Churchill, S. W. and Bernstein, M. J. Heat Transfer, 99, 300, (1977).

Equations/Symbols:

Calculate:
Insert surface temperature (Ts), fluid temperature (Tf), fluid pressure (P), diameter (D) and fluid velocity (v) and press 'Calculate'.

Fluid: Water Air R134a Ts (K): Tf (K): Pressure (Pa): D (m): v (m/s):

Fluid properties: ρ=995.35 kg/m3 cp=4,178.85 J/(kg.K) μ=0.000776027 Pa.s k=0.6191 W/(m.K)	Dimensionless numbers Re=1,282,627.14 Pr=5.24	Heat transfer coefficient h=2,008.33 W/m2.K

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