F3D_74

A square surface to a second square surface located in a perpendicular plane

Function f3d_74 returns the view factor from a square surface to a second square surface located in a perpendicular plane. The two surfaces share a common corner. The second surface can be tilted relative to the edge of the first surface by an angle a.

The calling protocol is:

F=f3d_74(N_rays, s1, s2, alpha)

Inputs:
N_rays: number of rays to use in Monte Carlo simulation (if N_rays<=0 then N_rays is set to 1x106)
s1: edge of surface 1 (ft or m)
s2: edge of surface 2 (ft or m)
alpha: angle (deg or rad)

Example:
$UnitSystem SI Degree
s1=1 [m]
s2=2 [m]
alpha=30 [deg]
N_rays=1e6
F=f3d_74(N_rays, s1, s2, alpha)

{Solution:
F=0.316}

Reference:
Monte-Carlo procedure programmed by Greg Nellis, Mechanical Engineering Department, University of Wisconsin, Madison, May, 2015