F3D_11

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

View Factor Index