This folder contains the essential input files required by Sciantix:
- **
input_settings.txt**: Specifies the models and numerical solvers used in the simulation.
- **
input_history.txt**: Includes the time (h), temperature (K), fission rate (fiss/m³-s), and hydrostatic stress (MPa) as a function of time.
- **
input_initial_conditions.txt**: Sets initial conditions for the simulation.
- **
input_scaling_factors.txt**: (Optional) File for scaling factors.
Below is a detailed description of each file.
Input Settings
The following settings define the models and methods used for the simulation.
1 # iGrainGrowth (0 = no grain growth, 1 = Ainscough et al. (1973), 2 = Van Uffelen et al. (2013))
1 # iFissionGasDiffusivity (0 = constant value, 1 = Turnbull et al. (1988))
1 # iDiffusionSolver (1 = SDA with quasi-stationary hypothesis, 2 = SDA without quasi-stationary hypothesis)
1 # iIntraGranularBubbleBehavior (1 = Pizzocri et al. (2018))
1 # iResolutionRate (0 = constant value, 1 = Turnbull (1971), 2 = Losonen (2000), 3 = thermal resolution, Cognini et al. (2021))
1 # iTrappingRate (0 = constant value, 1 = Ham (1958))
1 # iNucleationRate (0 = constant value, 1 = Olander, Wongsawaeng (2006))
1 # iOutput (1 = default output files)
1 # iGrainBoundaryVacancyDiffusivity (0 = constant value, 1 = Reynolds and Burton (1979), 2 = Pastore et al. (2015))
1 # iGrainBoundaryBehaviour (0 = no grain boundary bubbles, 1 = Pastore et al. (2013))
1 # iGrainBoundaryMicroCracking (0 = no model considered, 1 = Barani et al. (2017))
0 # iFuelMatrix (0 = UO2, 1 = UO2 + HBS)
0 # iGrainBoundaryVenting (0 = no model considered, 1 = Pizzocri et al., D6.4 (2020), H2020 Project INSPYRE)
0 # iRadioactiveFissionGas (0 = not considered)
0 # iHelium (0 = not considered)
0 # iHeDiffusivity (0 = null value, 1 = limited lattice damage, Luzzi et al. (2018), 2 = significant lattice damage, Luzzi et al. (2018))
0 # iGrainBoundarySweeping (0 = no model considered, 1 = TRANSURANUS swept volume model)
0 # iHighBurnupStructureFormation (0 = no model considered, 1 = fraction of HBS-restructured volume from Barani et al. (2020))
0 # iHighBurnupStructurePorosity (0 = no evolution of HBS porosity, 1 = HBS porosity evolution based on Spino et al. (2006) data)
0 # iHeliumProductionRate (0 = zero production rate, 1 = helium from ternary fissions, 2 = linear with burnup (FR))
0 # iStoichiometryDeviation (0 = not considered, 1 = Cox et al. (1986), 2 = Bittel et al. (1969), 3 = Abrefah et al. (1994), 4 = Imamura et al. (1997), 5 = Langmuir-based approach)
0 # iBubbleDiffusivity (0 = not considered, 1 = volume diffusivity)
Input Initial Conditions
This file sets the initial conditions for various parameters within the simulation.
5.0e-06
# initial grain radius (m)
0.0 0.0 0.0 0.0 0.0 0.0
# initial Xe (at/m³) produced, intragranular, intragranular in solution, intragranular in bubbles, grain boundary, released
0.0 0.0 0.0 0.0 0.0 0.0
# initial Kr (at/m³) produced, intragranular, intragranular in solution, intragranular in bubbles, grain boundary, released
0.0 0.0
# initial He (at/m³) produced, intragranular, intragranular in solution, intragranular in bubbles, grain boundary, released
0.0 0.0
# initial intragranular bubble concentration (at/m³), radius (m)
0.0
# initial fuel burn-up (MWd/kgUO2)
0.0
# initial fuel effective burn-up (MWd/kgUO2)
0.0
# initial irradiation time (h)
10641.0
# initial fuel density (kg/m³)
0.0 3.0 0.0 0.0 97.0
# initial U234 U235 U236 U237 U238 (% of heavy atoms) content
0.0 0.0 0.0 0.0 0.0 0.0 0.0
# initial Xe133 (at/m³) produced, intragranular, intragranular in solution, intragranular in bubbles, decayed, grain boundary, released
0.0 0.0 0.0 0.0 0.0 0.0 0.0
# initial Kr85m (at/m³) produced, intragranular, intragranular in solution, intragranular in bubbles, decayed, grain boundary, released
0.0
# initial fuel stoichiometry deviation (\)
Note: Ensure that the comment symbol (#) is placed below each data series. This is mandatory.
Input Scaling Factors
This file contains the scaling factors applied to various model parameters during the simulation.
1.0
# scaling factor - resolution rate
1.0
# scaling factor - trapping rate
1.0
# scaling factor - nucleation rate
1.0
# scaling factor - diffusivity
1.0
# scaling factor - temperature
1.0
# scaling factor - fission rate
1.0
# scaling factor - cent parameter
1.0
# scaling factor - helium production rate
1.0
# scaling factor - dummy
If you experience any issues with these files, please contact the main developers (D. Pizzocri, G. Zullo) for support.
