Parallel, directly opposed right triangles
Function F3D_44(c,b,theta) returns the view factor between two parallel right triangles that are directly opposed from one another.
Inputs:
c = distance between triangles [m] or [ft]
b = base of triangles [m] or [ft]
theta = one of the acute angles of the triangles [degree] or [radian]
Example:
$UnitSystem SI Pa J K m radian
c=0.1 [m]
b=0.1 [m]
theta=pi/4 [rad]
F=F3D_44(c,b,theta)
{Solution: F=0.1186}
Reference:
McAdam, D.W.; Khatry, A.K.; and Iqbal, M., 1971, "Configuration Factors for Greenhouses," Am. Soc. Ag. Engineers, vol. 14, no. 6, pp. 1068-1092, Nov.-Dec.