SF_3
Function SF_3 provides the shape factor ([m] or [ft]) for a cylinder that is buried in a semi-infinite medium with one end coincident with the medium surface.
Inputs:
D = diameter of cylinder ([m] or [ft])
L = length of cylinder ([m] or [ft])
Example: SF = SF_3(D, L)
Reference: Incropera, F. & DeWitt, D. (2002). Fundamentals of heat and mass transfer, 5th ed. Hoboken, New Jersey: John Wiley & Sons. p. 193-194.