F3D_38

Right triangle to perpendicular right triangle sharing the same base but oriented oppositely

Function f3d_38(W,L,D) returns the view factor between a right triangle and a perpendicular right triangle sharing the same base but with the height on the opposite side.

Inputs:
W = height of triangle 1 [m] or [ft]
L = height of triangle 2 [m] or [ft]
D = length of base both triangles [m] or [ft]

Example:
$UnitSystem SI Pa J K m
D=0.1 [m]
L=0.05 [m]
W=0.2 [m]
F=f3d_38(W,L,D)
{Solution: F=0.3027}

Reference:
Sauer, H.J., "Configuration factors for radiant energy interchange with triangular areas," ASHRAE Transactions, Vol. 80, Part 2, (1974).