SF_21
Function SF_21 provides the shape factor ([m] or [ft]) for conduction between one pipe in a circular array of equally spaced pipes and the exterior of a cylinder.
Inputs:
d = diameter of circular array of holes ([m] or [ft])
D_out = diameter of the bounding cylinder ([m] or [ft])
d_p = diameter of pipes ([m] or [ft])
N = number of pipes
L = length of pipes and cylinder ([m] or [ft])
Example: SF = SF_21(d, D_out, d_p, N, L)
Reference: White, F. (1984). Heat transfer. Reading, Massachusettes: Addison-Wesley. p. 118.
Example:
$UnitSystem SI Mass J K Pa Radian
$VarInfo d, D_out, d_p, L, SF units=m
d = 0.2 [m]
D_out = 0.4 [m]
d_p = 0.02 [m]
N = 6 [-]
L = 1 [m]
SF = SF_21(d, D_out, d_p, N, L)
{Solution:
SF = 8.073 [m]}