*HEADING
 : TWO CONCENTRIC CYLINDERS ONE ATOP THE OTHER
*NODE
1,0.,0.
4,24.,0.
31,0.,15.
34,24.,15.
*NGEN,NSET=BOTTOM
1,4
*NGEN,NSET=TOP
31,34
*NFILL
BOTTOM,TOP,3,10
*NSET,NSET=RIGHT
4,14,24,34
*ELEMENT,TYPE=DCAX4,ELSET=EALL
1,22,23,33,32
2,12,13,23,22
3,3,4,14,13
*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
0.76, 
*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, 
*VIEW FACTOR OUTPUT, cavity=CAV1
*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