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Annular Ring on Cylinder Base or Top to Inside of Right Circular Cylinder

Function F3D_19(r_1, r_2, h) returns the view factor between an annular right at the base (or top)  of a right circular cylinder (surface 1) to the inside surface of a cylinder (surface 2).

Inputs:

r_1 = inner radius of the annular ring [m or ft]

r_2 = radius of the cylinder [m or ft]

h = height of the cylinder [m or ft]

If r_1=0, use function F3D_17.

Example:  

$UnitSystem SI K Pa J rad

r_1=0.1 [m]

r_2=0.2 [m]

h=0.5

F=F3D_19(r_1, r_2, h)

{Solution: F=0.8806}

Reference: www.me.utexas.edu/~howell/sectionc/C-83.html.

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