*HEADING
 XRVDA4S2: TWO CONCENTRIC CYLINDERS OF INFINITE LENGTH
 TEMPERATURES IN CELCIUS. FOUR ELEMENTS ON EACH FACE.
*NODE
1,0.,0.
5,0.,5.
6,8.,0.
10,8.,5.
11,16.,0
15,16.,5.
16,24.,0.
20,24.,5.
*NGEN,NSET=CENT
1,5
*NGEN,NSET=OUT
16,20
*NGEN
6,10
11,15
*ELEMENT,TYPE=DCAX4,ELSET=EALL
1,1,6,7,2
2,11,16,17,12
*ELGEN,ELSET=INNER
1,4,1,2
*ELGEN,ELSET=OUTER
2,4,1,2
*ELSET,ELSET=EALL
INNER,OUTER,
*SOLID SECTION,ELSET=EALL,MATERIAL=ALU
*MATERIAL,NAME=ALU
*CONDUCTIVITY
237., 
*DENSITY
2702., 
*SPECIFIC HEAT
903., 
*surface,NAME=SURF1,PROPERTY=PROP1
INNER,S2
OUTER,S4
*CAVITY DEFINITION,NAME=CAV1,AMB=-173.16
SURF1, 
*SURFACE PROPERTY,NAME=PROP1
*EMISSIVITY
0.76, 
*PHYSICAL CONSTANTS,STEFANB=5.67E-08,ABSOLUTE ZERO=-273.16
**
*RESTART,WRITE,FREQ=10
*STEP,INC=20
 RADIATION VIEWFACTOR TESTS
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,SYMMETRY=SYMM1
*RADIATION SYMMETRY,NAME=SYMM1
*PERIODIC,TYPE=ZDIR,NR=10
2.5,5.
*BOUNDARY
CENT,11,,726.84
OUT,11,,-173.16
*NODE PRINT
NT,COORD
*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