SF_28

SF_28

Function SF_28(d_in, d_out, L, N) returns the shape factor for conduction between an N-sided polygon shaped hole that is centered inside a circular extrusion.

The calling protocol is:

S= SF_28(d_in, d_out, L, N)

Inputs:
d_in = diameter of the circle inscribed within the polygon [m or ft]
d_out = diameter of the extrusion [m or ft]
L = length of the extrusion [m or ft]
N = number of sides [-]

Outputs:
S shape factor [m or ft]

Rohsenow, W.M, J. P. Hartnett, and Y. I. Cho, Handbook of Heat Transfer, 3rd Edition, McGraw Hill, (1998).

Example:
$UnitSystem SI Mass J K Pa
d_in=0.1 [m]
d_out = 0.2 [m]
L = 1 [m]
N=4 [-]
S = sf_28(d_in,d_out,L,N)

{Solution:
S=8.971 [m]}

Shape Factors Index