hyperion

Pipeline overview

Prerequisites

All scripts import shared data and constants from exp_data.py, which contains all the experimental data and necessary global variables.

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Step 1 — Dry-run (Ni permeability) baseline (run in any order)

Script	Purpose
dry_run.py	Forward simulation of the dry-run cases; compares model flux against experimental measurements
dry_run_fitting.py	Recovers effective Ni permeability φ(T) from dry-run data via linear scaling; fits Arrhenius parameters

Output: results/dry_run_phi_arrhenius_fits.txt

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Step 2 — FLiBe permeability inversion

Reads dry_run_phi_arrhenius_fits.txt for Ni parameters, then inverts each SWAP experimental point to find the FLiBe φ that matches the measured flux.

Output: results/fitted_params.csv

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Step 3 — Sim vs exp comparison (run in any order, after Step 2)

Script	Purpose
comparison.py	2D FESTIM forward run for all cases using fitted φ, output the fluxes at all surface, compute the loss and contribution through the sidewall
para_1d.py	1D equivalent of HYPERION; faster, used for comparison with 2D results

Outputs: results/master_summary.csv, jsim_jexp.csv, percentage_metrics.csv, surface_breakdown.csv, all_results_1d.csv

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Step 4 — Plotting (run after Steps 2–3)

Script	Reads	Produces
plot_comparison.py	jsim_jexp.csv, all_results_1d.csv	1D vs 2D vs experiment panels
plot_sidewall_metrics.py	percentage_metrics.csv	Sidewall leakage / contribution figures
plot_perm_fits.py	fitted_params.csv, inverted_points.csv	Arrhenius plot with literature overlay

• t3.py — Transient simulation for FLiBe permeability with adaptive time-stepping enabled.
• t5.py — Input file for the flow-direction swap test.