*HEADING
: DFLUX, FILM, AND RADIATION FOR HEAT TRANSFER ELEMENTS  [DS3]
*NODE,NSET=ALL
 1, 0.
 2, 7.
 3, 7., 7.
 4, 0., 7.
*ELEMENT,TYPE=DS3, ELSET=EALL
 1,1,2,3
 2,4,1,2
*SHELL SECTION, MATERIAL=A1, ELSET=EALL
 .5,3
*PHYSICAL CONSTANTS,STEFAN BOLTZMANN=5.E-8,ABSOLUTE ZERO=-460.
*MATERIAL, NAME=A1
*CONDUCTIVITY
 3.77E-5, 
*SPECIFIC HEAT
 .39, 
*DENSITY
 82.9, 
**
**
*STEP
*HEAT TRANSFER,STEADY STATE
*NODE PRINT
 NT, 
*NODE PRINT,totals=yes
RFL, RFLE
*OUTPUT,FIELD
*NODE OUTPUT
NT,RFL,RFLE
*EL PRINT, TOTALS=YES
1,2,3
 IVOL,
 SVOL,
 EVOL,
*OUTPUT,FIELD
*ELEMENT OUTPUT
IVOL,
SVOL,
EVOL,
*DFLUX,OP=NEW
 1, BF, .3
 2, BF, .3
*BOUNDARY
 ALL,11
*END STEP
**
**
*STEP
*HEAT TRANSFER, STEADY STATE
*BOUNDARY,OP=NEW
 ALL, 13
*RADIATE,OP=NEW
*DFLUX,OP=NEW
 1, SNEG, .3
 2, SNEG, .3
*END STEP
**
**
*STEP
*HEAT TRANSFER, STEADY STATE
*BOUNDARY,OP=NEW
 ALL, 11
*DFLUX,OP=NEW
 1, SPOS, .3
 2, SPOS, .3
*END STEP
**
**
*STEP
*HEAT TRANSFER,STEADY STATE
*DFLUX, OP=NEW
*FILM,OP=NEW
 1, FNEG, 75., .103
 2, FNEG, 75., .103
*BOUNDARY,OP=NEW
 ALL, 13
*END STEP
**
**
*STEP
*HEAT TRANSFER,STEADY STATE
*FILM,OP=NEW
 1, FPOS, 75., .103
 2, FPOS, 75., .103
*BOUNDARY,OP=NEW
 ALL, 11
*END STEP
**
**
*STEP
*HEAT TRANSFER, STEADY STATE
*FILM,OP=NEW
*RADIATE, OP=NEW
 1, RNEG, 75., 1.E-6
 2, RNEG, 75., 1.E-6
*BOUNDARY,OP=NEW
 ALL, 13
*END STEP
**
**
*STEP
*HEAT TRANSFER, STEADY STATE
*RADIATE, OP=NEW
 1, RPOS, 75., 1.E-6
 2, RPOS, 75., 1.E-6
*BOUNDARY,OP=NEW
 ALL, 11
*END STEP