F2D_5

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.

View Factor Index