Circular disk to parallel right triangle
Function F3D_58(r,d,l_1,l_2) returns the view factor between a circular disk and parallel right triangle that has one acute vertex aligned with the center.
Inputs:
r = radius of the disk [m] or [ft]
d = distance between disk and triangle [m] or [ft]
l_1 = length of side of triangle that is opposite center [m] or [ft]
l_2 = length of side of triangle that is adjacent to center [m] or [ft]
Example:
$UnitSystem SI Mass J K Pa Degree
r=0.5 [m]
d=1 [m]
l_1=5 [m]
l_2=0.7 [m]
F=F3D_58(r,d,l_1,l_2)
{F = 0.1194}
Reference:
Tripp, W.; Hwang, C.; and Crank, R.E., 1962, "Radiation shape factors for plane surfaces and spheres, circles, or cylinders" (Spec. Rept. 16) Kansas State Univ. Bull., vol. 46, no. 4.