F3D_64

Annular disk to truncated coaxial cone

Function f3d_64(h,r_1,r_2,alpha) returns the view factor between an annular disk and a concentric truncated cone.

Inputs:
h = length of cone [m] or [ft]
r_1 = outer radius of disk [m] or [ft]
r_2 = inner radius of disk and cone [m] or [ft]
alpha = angle of cone [radian] or [degree] (can be positive or negative)

Example:
$UnitSystem SI Mass J K Pa Radian
h=1 [m]
r_1=1 [m]
r_2=0.2 [m]
alpha=pi/4 [radian]
F=f3d_64(h,r_1,r_2,alpha)
{F = 0.5811}

Reference:
Naraghi, M.H.N. and Chung, B.T.F., 1982, "Radiation configuration between disks and a class of axisymmetric bodies," J. Heat Transfer, vol. 104, no. 3, pp. 426-431, August.