SF_12
Function SF_12 provides the shape factor ([m] or [ft]) for conduction between a cylinder centered in a square beam, and the exterior surface of the beam.
Inputs:
D = diameter of cylinder ([m] or [ft])
w = length of square edges ([m] or [ft])
L = length of square solid and cylinder ([m] or [ft])
Example: SF = SF_12(D, w, L)
Reference: Incropera, F. & DeWitt, D. (2002). Fundamentals of heat and mass transfer, 5th ed. Hoboken, New Jersey: John Wiley & Sons. p. 193-194.