SF_23

SF_23

Function SF_23 provides the shape factor ([m] or [ft]) for conduction between two spheres that are buried in an infinite medium.

Inputs:
D_1 = diameter of sphere 1 ([m] or [ft])
D_2 = diameter of sphere 2 ([m] or [ft])
w = distance between sphere centerpoints ([m] or [ft])

Example: SF = SF_23(D_1, D_2, w)

Reference: Rolle, K. (2000). Heat and mass transfer. Columbus, Ohio: Prentice Hall. p.78.

Shape Factors Index