SF_22

Function SF_22 provides the shape factor ([m] or [ft]) for a hemisphere that is buried in a semi-infinite medium with the planar section coincident with the medium surface.
Input:
D = diameter of hemisphere ([m] or [ft])
Example: SF = SF_22(D)
Reference: White, F. (1984). Heat transfer. Reading, Massachusettes: Addison-Wesley. p. 120.
Example:
$UnitSystem SI Mass J K Pa Radian
$VarInfo D, SF units=m
D = 0.2 [m]
SF = SF_22(d)
{Solution:
SF = 0.6283 [m]}