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Infinitely long enclosure formed by three planar or convex surfaces



Function f2d_11(A1, A2, A3) returns the view factor from on planar or convex surface to a second planar on convex surface in an enclosure that extends to infinity in the direction into the screen.  

Inputs:
A1 = the area per unit width into the screen of convex or planar surface 1 [m or ft]
A2 = the area per unit width into the screen  of convex or planar surface 2 [m or ft]
A3 = the area of a surface which forms the enclosure  [m or ft]

Example:  
$UnitSystem SI K Pa J deg
A1=1 [m]
A2=1 [m]
A3=1 [m]
F=f2d_11(A1, A2, A3) 

{Solution:  F=0.5}


Reference: Rohsenow W.M., et al., Handbook of Heat Transfer, 3rd ed, McGraw-Hill, p. 7.80.

View Factor Index