*HEADING
 : TWO CONCENTRIC CYLINDERS OF SAME FINITE LENGTH
*NODE
1,0.,0.
4,24.,0.
5,0.,5.
8,24.,5.
*NGEN
1,4
5,8
*NSET,NSET=RIGHT
4,8
*NSET,NSET=LEFT
1,5
*ELEMENT,TYPE=DCAX4,ELSET=EALL
1,1,2,6,5
*ELGEN,ELSET=EALL
1,2,2
*SOLID SECTION,ELSET=EALL,MATERIAL=ALU
*MATERIAL,NAME=ALU
*CONDUCTIVITY
237., 
*DENSITY
2702., 
*SPECIFIC HEAT
903., 
*surface,NAME=SURF1,PROPERTY=PROP1
1,S2
2,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
 THERMAL RADIATION VIEWFACTOR
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=YES
*BOUNDARY
RIGHT,11,,1000.
LEFT,11,,300.
*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