Back to tools

Description: Heat transfer coefficient for external flow over spheres.

Reference: Whitaker, S. Aiche J. 18, 361, (1972).

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=993.60 kg/m3 cp=4,178.51 J/(kg.K) μ=0.000693763 Pa.s k=0.6265 W/(m.K)	Dimensionless numbers Re=1,432,191.08 Pr=4.63	Heat transfer coefficient h=1,356.30 W/m2.K

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