Perpendicular Offset Rectangles
Function F3D_11(a_1, a_2,b_1,b_2,c) returns the view factor from area 1 to area 2 of two finite rectangles that are oriented perpendicular to each other as shown .
Inputs:
a_1, a_2, b_1, b_2 and c are the lengths shown in the figure [m or ft.]
Note: The input values must all be greater than 0!
Example:
$UnitSystem SI K Pa J deg
a_1=0.1 [m]
a_2=0.5 [m]
b_1=0.2 [m]
b_2=0.3 [m]
c=0.5 [m]
F=F3D_11(a_1, a_2,b_1,b_2,c)
{Solution: F=0.07182 }
{See F3D_29 as an alternative.}
Reference: Chapman A.J., Fundamentals of Heat Transfer, Macmillan Publishing Co., 1987, p. 734