*HEADING
 : PARALLEL CIRCULAR DISKS CENTERS ALONG SAME NORMAL
 TWO ELEMENTS FOR BOTTOM DISK ONE FOR TOP DISK
*NODE
*NGEN,NSET=BOTTOM
*NCOPY,CHANGE NUMBER=10,OLD SET=BOTTOM,SHIFT,NEW SET=TOP
*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
1,S1
2,S3
3,S3
*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
 THERMAL RADIATION VIEWFACTOR
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=NO
*BOUNDARY
BOTTOM,11,,1000.
TOP,11,,100.
*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
*VIEWFACTOR OUTPUT, CAVITY=CAV1, FREQUENCY=1
*END STEP