Verification suite report
Exact-solution verification of Pyrolysis.jl: every case solves a problem with a closed-form (or manufactured) reference solution and reports error norms, pinned tolerances with provenance, and observed convergence orders. Methodology, case selection, and the dual-mode (CI assert / report) architecture are described in the Technical Reference Guide, §18.1–§18.2; the assert-mode twin of this report runs in Pkg.test() from the same case definitions (test/verification/).
Figures follow the FDS Verification Guide convention: lines are the exact/reference solution, markers are the solver. Tolerances are pinned at ~3× the observed error at pin time (the provenance column).
Where a case has a published analog in another solver, it carries a "Comparison with other codes" section: FDS 6.11.0 and Gpyro 0.8200 were run locally on the same problems (decks and outputs committed with provenance in test/verification/reference/), and their errors against the same exact solutions are overlaid — muted gray, log scale — together with a wall-time comparison at every resolution rung.
Generated 2026-09-27 by scripts/verification/run_reports.jl. Regenerate with: julia --project=scripts/verification scripts/verification/run_reports.jl
| case | title | tags | QoIs within tol | worst error/tol | observed order |
|---|---|---|---|---|---|
| V-BO-01 | PMMA-on-Kaowool burnout under ALE (parked depletion) | ale, burnout, depletion, beer_lambert, coupled, performance | 6/7 | 2.557 | — |
| V-BO-02 | PMMA-on-Kaowool burnout on a fixed mesh under surface absorption (top-cell parking) | eulerian, burnout, depletion, surface_absorption, coupled | 8/10 | 2.099 | — |
| V-BO-03 | PMMA burnout on a transparent substrate (transmitted-flux guard) | ale, burnout, depletion, beer_lambert | 4/4 | 0.7434 | — |
| V-BO-04 | Uniform zero-order burnout: exact thickness through park cascades | ale, burnout, depletion, kinetics, exact | 4/4 | 0.001932 | — |
| V-BO-05 | PMMA-on-Kaowool burnout on a fixed mesh under in-depth absorption stops at the first interior void | eulerian, burnout, depletion, beer_lambert, coupled | 4/4 | 0.8908 | — |
| V-CPL-01 | Neumann Stefan problem via apparent heat capacity (Gpyro params) | movingfront, latentheat, statedependentproperties, coupled | 9/9 | 0.3346 | — |
| V-CPL-01b | Neumann Stefan problem via gated reaction (±50 K rescaled) | movingfront, latentheat, kinetics, temperature_gate | 9/9 | 0.3505 | — |
| V-CPL-02 | Landau ablation: steady surface regression under ALE | ale, movingboundary, kinetics, surfaceregression, coupled | 6/6 | 0.5015 | 2.169 |
| V-CPL-03 | shrink/swell exact endpoints (6 permutations + WithChi law) | ale, volumechange, swelling, chi, massconservation | 18/18 | 0.3269 | — |
| V-CPL-04 | Frank-Kamenetskii slab: subcritical steady state + criticality bracket | reactionconduction, bifurcation, exothermic, coupledjacobian | 6/6 | 0.3826 | 2.474 |
| V-CPL-05 | TGA-to-gasification consistency ladder (1D → 0D thin limit) | kinetics, consistencyladder, thinlimit, bc_coupling | 4/4 | 0.334 | — |
| V-GT-01 | Gaussian gas-pulse diffusion (plane source) | gastransport, fickian, massconservation | 7/7 | 0.2298 | 2.012 |
| V-GT-02 | steady compressible Darcy outflow (P² profile) | gastransport, darcy, pressureclosure, steady | 4/4 | 0.145 | 0.8798 |
| V-HC-01 | semi-infinite solid, convective surface BC (erfc) | heatconduction, convectivebc, surface_newton | 9/9 | 0.01337 | 1.993 |
| V-HC-02a | finite slab, convective BC, Bi = 0.1 | heatconduction, convectivebc, biot_sweep | 8/8 | 0.003794 | 2 |
| V-HC-02b | finite slab, convective BC, Bi = 1.0 | heatconduction, convectivebc, biot_sweep | 8/8 | 0.01816 | 2 |
| V-HC-02c | finite slab, convective BC, Bi = 10.0 | heatconduction, convectivebc, biot_sweep | 8/8 | 0.02029 | 2.001 |
| V-HC-02d | finite slab, convective BC, Bi = 100.0 | heatconduction, convectivebc, biot_sweep | 8/8 | 0.02125 | 2 |
| V-HC-03 | finite slab, constant flux, adiabatic back | heatconduction, heatfluxbc, energybalance | 5/5 | 0.02041 | 2 |
| V-HC-04a | two-layer slab, k-ratio 10.0:1 | heatconduction, laminate, harmonicmean, steady | 4/4 | 0.003386 | — |
| V-HC-04b | two-layer slab, k-ratio 100.0:1 | heatconduction, laminate, harmonicmean, steady | 4/4 | 0.04082 | — |
| V-HC-04c | two-layer slab, k-ratio 10.0:1 (off-face interface) | heatconduction, laminate, harmonicmean, steady | 5/5 | 0.7869 | — |
| V-HC-05 | steady Kirchhoff profile with k(T) = k₀(1+βT) | heatconduction, temperaturedependent_k, kirchhoff, steady | 2/3 | 21.22 | 2 |
| V-MMS-01 | manufactured solution, coupled kinetics + T-props + gas transport | mms, coupled, kinetics, gastransport, orderverification | 5/5 | 0.005304 | 1.992 |
| V-MMS-02 | ALE free-stream preservation under prescribed mesh motion | mms, ale, gcl, free_stream | 4/4 | 0.2693 | — |
| V-MMS-03 | ALE manufactured solution, prescribed smooth mesh motion | mms, ale, gcl, order_verification | 3/3 | 0.1033 | 2.156 |
| V-MMS-04 | Induced-motion ALE manufactured solution (reaction-driven mesh) | mms, ale, kinetics, orderverification, approxjacobian | 6/6 | 0.3324 | 2.014 |
| V-RAD-01 | in-depth absorption + conduction (sub-surface peak) | radiation, beerlambert, convectivebc, coupled | 11/11 | 0.1733 | 1.995 |
| V-RX-01 | two-step series chain A→B→C, isothermal | kinetics, multi_step, isothermal | 5/5 | 0.2781 | — |
| V-RX-02a | zero-order decay (exact burnout time) | kinetics, reaction_order, isothermal | 2/2 | 0.002842 | — |
| V-RX-02b | second-order decay (ThermaKin C+C analog) | kinetics, reaction_order, isothermal | 2/2 | 0.3441 | — |
| V-RX-02c | contracting-sphere R3 decay (FDS NaHCO₃, 450 K) | kinetics, reaction_order, isothermal | 2/2 | 0.2774 | — |
| V-RX-02d | zero-order decay, depletion limiter ON (guard) | kinetics, depletion_limiter, isothermal | 2/2 | 0.000847 | — |
| V-RX-03 | competing parallel reactions with yield splits | kinetics, parallel_reactions, stoichiometry, energy | 6/6 | 0.2767 | — |
| V-RX-04a | thermally-thin radiative cooling (implicit exact) | radiation, radiativebc, surfacenewton, thermally_thin | 2/2 | 0.3244 | — |
| V-RX-04b | steady radiative–convective surface equilibrium | radiation, radiativebc, convectivebc, surface_newton, steady | 3/3 | 0.1074 | — |
Cases without report-mode output (no report metadata yet): V-CPL-02b, V-CPL-06a, V-CPL-06b.