Cylinder exterior to annular disk
Function F3D_6(r_1,r_2,l) returns the view factor from the exterior of a right cylinder to an annular disk at the end of the cylinder.
Inputs:
r_1 = the radius of the cylinder [m or ft]
r_2 = the outer radius of the annular disk [m or ft]
l = the length of the cylinder [m or ft]
Example:
$UnitSystem SI K Pa J deg
r_1=0.1 [m]
r_2=0.2 [m]
l=0.5 [m]
F=F3D_6(r_1,r_2,l)
{Solution: F=0.07056}
Reference: Rea, S. Rapid method for determining concentric cylinder radiation view factors. AIAA J., vol. 13, no. 8, pp. 1122-1123, 1975. in Howell, J. A catalog of radiation configuration factors. New York: McGraw Hill, 1982. p. 161.