*HEADING
 : TWO CONCENTRIC CYLINDERS ONE ATOP THE OTHER
*NODE
*NGEN,NSET=BOTTOM
*NGEN,NSET=TOP
*NFILL
BOTTOM,TOP,3,10
*NSET,NSET=RIGHT
*ELEMENT,TYPE=DCAX4,ELSET=EALL
*ELGEN,ELSET=EALL
*SOLID SECTION,ELSET=EALL,MATERIAL=ALU
*MATERIAL,NAME=ALU
*CONDUCTIVITY
237.,
*DENSITY
2702.,
*SPECIFIC HEAT
903.,
*surface,NAME=SURF1,PROPERTY=PROP1
EALL,S4
*CAVITY DEFINITION,NAME=CAV1,AMB=100
SURF1,
*SURFACE PROPERTY,NAME=PROP1
*EMISSIVITY
*PHYSICAL CONSTANTS,STEFANB=5.67E-08,ABSOLUTE ZERO=0.0
**
*RESTART,WRITE,FREQ=10
*STEP,INC=20
 RADIATION VIEWFACTOR TEST
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=YES,VTOL=1.E-3
*BOUNDARY
RIGHT,11,,1000.
*NODE PRINT
NT,
*NODE FILE
NT,
*OUTPUT,FIELD
*NODE OUTPUT
NT,
*RADIATION PRINT
RADFL,RADFLA,RADTL,RADTLA,VFTOT,FTEMP
*RADIATION FILE
RADFL,RADFLA,RADTL,RADTLA,VFTOT,FTEMP
*OUTPUT,FIELD
*RADIATION OUTPUT
RADFL,RADFLA,RADTL,RADTLA,VFTOT,FTEMP
*END STEP