Infinitely long plates at angle alpha
Function F2D_2(alpha, w) returns the view factor between two infinitely long plates of the same finite width having a common edge and having an included angle a to each other.
Inputs:
alpha is the angle between the plates [° or radians]
w is the width of each plate [m or ft]
Example:
$UnitSystem SI K Pa J deg
alpha=45[°]
w=1 [m]
F=F2D_2(alpha, w)
{Solution: F=0.6173}
Reference: Siegel and Howell, Thermal radiation heat transfer, 4th edition, p.844.