F3D_53

Parallel regular pentagons

Function f3d_53(l,h) returns the view factor between parallel regular pentagons.

Inputs:
l = edge of polygon [m] or [ft]
h = distance between the pentagons [m] or [ft]

Example:
$UnitSystem SI Pa J K m radian
h=0.25 [m]
l=0.5 [m]
F=f3d_53(l,h)

{Solution:
F=0.4974}

Reference:
Feingold, A., 1966, "Radiant-interchange configuration factors between various selected plane surfaces," Proc. Roy. Soc. London, ser. A, vol. 292, no. 1428, pp. 51-60.