2D 4-HEX super-cell lattice geometry
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% --- 2D Simplified 4-HEX super-cell model-like EBR-II --------------------- % set title "2D Simplified 4-HEX super-cell model-like EBR-II" % ------------------------- PIN DEFINITION --------------------------------- % % --- Fuel pin with central hole: pin 1 void 0.07000 fuel1 0.38000 void 0.39000 clad 0.45500 cool pin 2 void 0.07000 fuel2 0.38000 void 0.39000 clad 0.45500 cool pin 3 void 0.07000 fuel3 0.38000 void 0.39000 clad 0.45500 cool pin 4 void 0.07000 fuel4 0.38000 void 0.39000 clad 0.45500 cool pin 5 void 0.07000 fuel5 0.38000 void 0.39000 clad 0.45500 cool pin 6 void 0.07000 fuel6 0.38000 void 0.39000 clad 0.45500 cool pin 7 void 0.07000 fuel7 0.38000 void 0.39000 clad 0.45500 cool % --- Central tube: pin 8 cool 0.44000 clad 0.51500 cool % --- Empty lattice position: pin 9 cool % ------------------------- HEXAGONAL PART --------------------------------- % % --- Lattice (type = 3, pin pitch = 1.23 cm) - hexagonal-baseline: lat 10 3 0.0 0.0 15 15 1.23 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 1 1 1 1 1 1 1 9 9 9 9 9 9 9 1 1 1 1 1 1 1 1 9 9 9 9 9 9 1 1 1 1 1 1 1 1 1 9 9 9 9 9 1 1 1 1 1 1 1 1 1 1 9 9 9 9 1 1 1 1 1 1 1 1 1 1 1 9 9 9 1 1 1 1 1 1 1 1 1 1 1 1 9 9 1 1 1 1 1 1 8 1 1 1 1 1 1 9 9 1 1 1 1 1 1 1 1 1 1 1 1 9 9 9 1 1 1 1 1 1 1 1 1 1 1 9 9 9 9 1 1 1 1 1 1 1 1 1 1 9 9 9 9 9 1 1 1 1 1 1 1 1 1 9 9 9 9 9 9 1 1 1 1 1 1 1 1 9 9 9 9 9 9 9 1 1 1 1 1 1 1 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 % --- Lattice (type = 3, pin pitch = 1.23 cm) - triangular-baseline: lat 20 3 0.0 0.0 15 15 1.23 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 1 7 7 7 7 7 1 9 9 9 9 9 9 9 2 1 7 7 7 7 1 6 9 9 9 9 9 9 2 2 1 7 7 7 1 6 6 9 9 9 9 9 2 2 2 1 7 7 1 6 6 6 9 9 9 9 2 2 2 2 1 7 1 6 6 6 6 9 9 9 2 2 2 2 2 1 1 6 6 6 6 6 9 9 1 1 1 1 1 1 8 1 1 1 1 1 1 9 9 3 3 3 3 3 1 1 5 5 5 5 5 9 9 9 3 3 3 3 1 4 1 5 5 5 5 9 9 9 9 3 3 3 1 4 4 1 5 5 5 9 9 9 9 9 3 3 1 4 4 4 1 5 5 9 9 9 9 9 9 3 1 4 4 4 4 1 5 9 9 9 9 9 9 9 1 4 4 4 4 4 1 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 % --- Lattice (type = 3, pin pitch = 1.23 cm) - empty: lat 30 3 0.0 0.0 15 15 1.23 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 % --- Surfaces (assembly pitch = 14.7 cm): surf 41 hexxc 0.0 0.0 7.100 % Shroud tube inner radius surf 42 hexxc 0.0 0.0 7.250 % Shroud tube outer radius surf 43 hexxc 0.0 0.0 7.350 % Outer boundary % --- Cells for radial reflector: cell 41 40 refl -41 % Reflector cell 42 40 tube 41 -42 % Shroud tube cell 43 40 cool 42 -43 % Water in channel % ------------------------- TRIANGULAR PART -------------------------------- % % --- Triangular surfaces: surf 21 tric -2.45 4.24352447854 2.45 1 surf 22 tric 2.45 4.24352447854 2.45 3 surf 23 tric -4.90 0.0 2.45 3 surf 24 tric 4.90 0.0 2.45 1 surf 25 tric -2.45 -4.24352447854 2.45 1 surf 26 tric 2.45 -4.24352447854 2.45 3 % --- Sub-assembly cells (switch between hexagonal/triangular baseline): cell 21t 21t fill 20 -21 cell 22t 22t fill 20 -22 cell 23t 23t fill 20 -23 cell 24t 24t fill 20 -24 cell 25t 25t fill 20 -25 cell 26t 26t fill 20 -26 % --- Transformations to return to global coordinates (0,0,0): trans U 21t 2.45 -4.24352447854 0.0 trans U 22t -2.45 -4.24352447854 0.0 trans U 23t 4.90 0.0 0.0 trans U 24t -4.90 0.0 0.0 trans U 25t 2.45 4.24352447854 0.0 trans U 26t -2.45 4.24352447854 0.0 % --- Sub-assembly lattice: lat 21 9 0.0 0.0 1 0.0 21t lat 22 9 0.0 0.0 1 0.0 22t lat 23 9 0.0 0.0 1 0.0 23t lat 24 9 0.0 0.0 1 0.0 24t lat 25 9 0.0 0.0 1 0.0 25t lat 26 9 0.0 0.0 1 0.0 26t % --- Lattice (type = 14, pin pitch = 4.90 cm): lat 50 14 4.90 0.00 3 3 4.90 25 26 40 23 24 40 21 22 40 % ------------------------- ASSEMBLY LATTICE -------------------------------- % % --- Lattice (type = 1, pin pitch = 14.70 cm) lat 60 2 0.0 0.00 3 3 14.70 30 10 10 10 50 10 10 10 30 surf 70 hexxc 0.0 0.0 14.70 cell 71 70 fill 60 -70 % Fill with assembly lattice cell 72 70 cool 70 % ------------------------- 4-HEX SUPER-CELL -------------------------------- % surf 80 hexxprism 0.0 0.0 14.7 0.0 36.9 cell 81 0 fill 70 -80 % Fill with super-cell lattice cell 82 0 outside 80 % outside world % ----------------------------- MATERIALS ----------------------------------- % % --- UO2 fuel enriched to 3.6 wt-% U-235: mat fuel1 -10.45000 92235.09c -0.03173 92238.09c -0.84977 8016.09c -0.11850 mat fuel2 -10.45000 92235.09c -0.03173 92238.09c -0.84977 8016.09c -0.11850 mat fuel3 -10.45000 92235.09c -0.03173 92238.09c -0.84977 8016.09c -0.11850 mat fuel4 -10.45000 92235.09c -0.03173 92238.09c -0.84977 8016.09c -0.11850 mat fuel5 -10.45000 92235.09c -0.03173 92238.09c -0.84977 8016.09c -0.11850 mat fuel6 -10.45000 92235.09c -0.03173 92238.09c -0.84977 8016.09c -0.11850 mat fuel7 -10.45000 92235.09c -0.03173 92238.09c -0.84977 8016.09c -0.11850 % --- Zr-Nb cladding and shroud tube wall: mat clad -6.55000 40000.06c -0.99000 41093.06c -0.01000 mat tube -6.55000 40000.06c -0.99000 41093.06c -0.01000 % --- Coolant and reflector: mat cool -0.72070 moder lwtr 1001 1001.06c 2.0 8016.06c 1.0 mat refl -0.72070 moder lwtr 1001 1001.03c 2.0 8016.03c 1.0 % --- Thermal scattering data for light water: therm lwtr lwj3.11t % ----------------------------- SETTINGS ------------------------------------ % % --- Cross section data library file path: set acelib "sss_jeff311u.xsdata" % --- Boundary condition: set bc 3 % --- Neutron population and criticality cycles set pop 2000 500 20 % --- Geometry and mesh plots: plot 3 1000 1000 mesh 3 1000 1000 % --------------------------------------------------------------------------- %