*HEADING
INFINITELY EXTENDING 3D ARRAY OF CUBES, DC2D4, 2 PER SYMM (NR=5,4)
*PREPRINT
*PHYSICAL CONSTANTS, STEFAN=5.669E-8,ABSOLUTE ZERO=0.0
*NODE
1,0.,0.
18,17.,0.
421,0.,21.
438,17.,21.
*NGEN,NSET=LEFT_HAND_SIDE
1,421,20
*NGEN,NSET=RIGHT_HAND_SIDE
18,438,20
*NFILL,NSET=ALL_NODES
LEFT_HAND_SIDE,RIGHT_HAND_SIDE,17
*NSET,NSET=LOWER_LEFT_HAND_SIDE,GEN
1,401,40
3,403,40
5,405,40
7,407,40
9,409,40
11,411,40
13,413,40
15,415,40
17,417,40
*NSET,NSET=UPPER_RIGHT_HAND_SIDE,GEN
22,422,40
24,424,40
26,426,40
28,428,40
30,430,40
32,432,40
34,434,40
36,436,40
38,438,40
*NSET,NSET=OUTPUT_NODES,GEN
209,210
229,230
*ELEMENT,TYPE=DC2D4,ELSET=CONDUCTION_ELEMENTS
55,209,210,230,229
*ELSET,ELSET=OUTPUT_ELEMENTS,GEN
55,55
*SOLID SECTION,ELSET=CONDUCTION_ELEMENTS,MATERIAL=ALUMINUM
*MATERIAL,NAME=ALUMINUM
*CONDUCTIVITY
204., 
*DENSITY
2707., 
*SPECIFIC HEAT
896., 
***  CAVITY DEFINITION
*surface,NAME=ALL_SURFACES,PROPERTY=PROPERTY_FOR_ALL_SURFACES
CONDUCTION_ELEMENTS,S1
CONDUCTION_ELEMENTS,S2
CONDUCTION_ELEMENTS,S3
CONDUCTION_ELEMENTS,S4
*CAVITY DEFINITION,NAME=2D_CAVITY,AMB=200.
ALL_SURFACES,
*SURFACE PROPERTY,NAME=PROPERTY_FOR_ALL_SURFACES
*EMISSIVITY
0.7, 
***
*INITIAL CONDITIONS,TYPE=TEMPERATURE
ALL_NODES,300.
*RESTART,WRITE,FREQ=10
*STEP,INC=20
*HEAT TRANSFER,STEADY STATE
1.,1.
*BOUNDARY
LOWER_LEFT_HAND_SIDE,11,,1000.
UPPER_RIGHT_HAND_SIDE,11,,400.
*RADIATION VIEW,REFLECTION=NO,SYMM=XY_PERIODIC
*RADIATION SYMMETRY,NAME=XY_PERIODIC
*PERIODIC,NR=5,TYPE=2D
0.,9.5,20.,9.5,0.,2.
*PERIODIC,NR=4,TYPE=2D
7.5,20.,7.5,0.,2.,0.
*NODE PRINT,NSET=OUTPUT_NODES
NT, 
*NODE FILE,NSET=OUTPUT_NODES
NT, 
*RADIATION PRINT
RADFL,VFTOT,FTEMP
*RADIATION FILE,ELSET=OUTPUT_ELEMENTS
RADFL,VFTOT,FTEMP
*VIEWFACTOR OUTPUT,CAVITY=2D_CAVITY
*OUTPUT,FIELD
*NODE OUTPUT,NSET=OUTPUT_NODES
NT, 
*RADIATION OUTPUT,ELSET=OUTPUT_ELEMENTS
RADFL,VFTOT,FTEMP
*END STEP