Contents

Annular ring to inside of outer cylinder

Function F3D_65(r_c,r_1,r_2,h) returns the view factor between an annular ring between two concentric cylinders to the inside surface of the outer cylinder.

Inputs:

r_c = radius of inner cylinder [m] or [ft]

r_1 = outer radius of annular ring [m] or [ft]

r_2 = radius of outer cylinder [m] or [ft]

h = height of cylinder [m] of [ft]

Example: 

$UnitSystem SI Mass J K Pa Radian

r_c=0.2 [m]

r_1=0.4 [m]

r_2=0.5 [m]

h=0.5 [m]

F=F3D_65(r_c,r_1,r_2,h)

{Solution

F=0.5228}

Reference: 

van Antwerpen, H.J. and Greyvenstein, G.P, "Evaulation of a detailed radiation heat transfer model in a high temperature reactor systems simulations model", Nuclear Engineering and Design, Vol 238, pp. 2985-2994, (2008)