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Infinite concentric cylinders

Function F2D_5(r_1, r_2) provides the view factor between two infinitely long concentric cylinders.

Inputs:

r_1 is the radius of  cylinder1 [m or ft]

r_2 is the radius of cylinder 2 [m or ft]  (Note that r_2>r_1)

Example:  

$UnitSystem SI K Pa J deg

r_1=0.1 [m]

r_2=0.2 [m]

F=F2D_5(r_1, r_2)

{Solution: F=0.5}

Reference: Siegel and Howell, Thermal radiation heat transfer, 4th edition, p.847.

Index