Contents - Index


SF_5

 

 

Function SF_5 provides the shape factor  ([m] or [ft])for conduction between the internal and external surfaces of a tube associated with an N-sided regular polygon within an N-sided regular polygon.

 

Inputs:

 d_in = diameter of circle inscribed in inner polygon ([m] or [ft])

 d_out = diameter of circle inscribed in outer polygon ([m] or [ft])

 L = length of tube ([m] or [ft])

 N = number of sides ([m] or [ft])

 

Example:  SF = SF_5(d_in, d_out, L, N)

 

Reference:  Rohsenow W., Harnet J. & Cho, Y. (1998). Handbook of heat transfer, 3rd ed. Madison, Wisconsin: McGraw Hill. p. 3.21.

 

 

Shape Factors Index