F3D_5

Concentric cylinders

Function f3d_5(r_1, r_2, w) returns the configuration factor from the area of the outermost of two concentric cylinders (of the same finite length) to itself, i.e., F_2,2.

Inputs:
r_1 - radius of the inner cylinder [m or ft]
r_2 - radius of the outer cylinder   [m or ft]
w - length of the cylinders [m or ft]

Example:
$UnitSystem SI K Pa J deg
r_1=0.1 [m]
r_2=0.2 [m]
w=0.5 [m]
F_2_2=f3d_5(r_1, r_2, w)

{Solution:
F_2_2=0.357 }

See f3d_4 for the view factor from the inner to outer cylinder.

Reference: http://www.me.utexas.edu/~howell/sectionb/C-91.html

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