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An infinite surface to an in-line array of infinitely long tubes with n rows

Function F2D_16 returns the view factor from an infinitely long flat plate to an in-line array of infinitely long tubes composed of n rows.  

The calling protocol is:

F =  F2D_16(d, s, n)

Inputs:

d: diameter of tubes (ft or m)

s: distance between tube centers horizontally (ft or m)

n: number of rows in array

Example: 

$UnitSystem SI Mass J K Pa Degree

d=1 [m]

s=4 [m]

n=2 [-]

F=F2D_16(d, s, n)

{Solution

F=0.5622}

Reference: http://www.me.utexas.edu/~howell/sectionc/C-7.html

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