Octo-TIGER / Radiation verification

Radiation test problems

M1 RK1 and FLD. Open a problem for its physical setup, comparison method, sources, and results at every completed resolution.

All requested simulations and postprocessing are complete1 completed runsl2-marshak-m1

Saved-state movie

Marshak · L2 · M1 RK1

121 stored states; 121 shown. Physical time: 0–60 normalized time. Playback: 60 s.

Zero-order hold; no solution interpolation. Playback holds each saved numerical state over its time interval and includes endpoint holds.

All 121 snapshot times

Snapshot times: 0, 0.505208333, 1, 1.50520833, 2.00520833, 2.5, 3, 3.5, 4, 4.5, 5.00520833, 5.50520833, 6.00520833, 6.50520833, 7.00520833, 7.50520833, 8.00520833, 8.50520833, 9.00520833, 9.50520833, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5052083, 20.0052083, 20.5052083, 21.0052083, 21.5052083, 22.0052083, 22.5052083, 23.0052083, 23.5052083, 24.0052083, 24.5052083, 25.0052083, 25.5052083, 26.0052083, 26.5052083, 27.0052083, 27.5052083, 28.0052083, 28.5052083, 29.0052083, 29.5052083, 30.0052083, 30.5052083, 31.0052083, 31.5052083, 32.0052083, 32.5052083, 33.0052083, 33.5052083, 34.0052083, 34.5052083, 35.0052083, 35.5052083, 36.0052083, 36.5052083, 37.0052083, 37.5052083, 38.0052083, 38.5, 39, 39.5, 40, 40.5, 41, 41.5, 42, 42.5, 43, 43.5, 44, 44.5, 45, 45.5, 46, 46.5, 47, 47.5, 48, 48.5, 49, 49.5, 50, 50.5, 51, 51.5, 52, 52.5, 53, 53.5, 54, 54.5, 55, 55.5, 56, 56.5, 57, 57.5, 58, 58.5, 59, 59.5, 60 normalized time.

Arrows show the independently evolved M1 radiation flux. Arrows have equal length and show direction only.

Movies show saved numerical states; model-specific analytic comparisons are in the final-time profiles.

Central z=0+ radiation energy slice with faint cell mesh and equal-length flux direction arrows. Arrows show the independently evolved M1 radiation flux. Fixed color limits; actual stored Silo times held without solution interpolation. Movies show saved numerical states; model-specific analytic comparisons are in the final-time profiles. The maps show the full simulation domain without cropping.

Download MP4 · Rendering and timing metadata · Full run report

All campaign movies

Awaiting completed results
Thin transport

Streaming wave

A smooth, periodic radiation wave travels at the speed of light. Its phase and amplitude test transport accuracy.

0 completed resolutions

Setup & all results →
Awaiting completed results
Thin transport

Streaming front

A sharp, bright half-domain crosses a nearly dark background. Exact cell averages track both moving edges through the periodic box.

0 completed resolutions

Setup & all results →
Awaiting completed results
Telegraph equation

Gaussian pulse

A small Gaussian perturbation evolves in a fixed scattering medium. A Fourier solution of the telegraph equation supplies the reference.

0 completed resolutions

Setup & all results →
Awaiting completed results
Steady diffusion

Equilibrium sphere

A smooth spherical emitter balances outward radiation transport. An error-function solution describes its steady diffusion equilibrium.

0 completed resolutions

Setup & all results →
Awaiting completed results
Coupled radiation hydrodynamics

Subcritical radiative shock

Radiation heats gas ahead of a shock, forming a precursor whose gas temperature remains below the downstream equilibrium temperature.

0 completed resolutions

Setup & all results →
Awaiting completed results
Coupled radiation hydrodynamics

Supercritical radiative shock

A faster shock produces a stronger radiative precursor. Gas ahead of the shock approaches the downstream equilibrium temperature.

0 completed resolutions

Setup & all results →
Awaiting completed results
Coupled radiation hydrodynamics

Radiating blast wave

A spherical energy release drives a shock and radiation precursor into a radial atmosphere, evolved on a Cartesian mesh.

0 completed resolutions

Setup & all results →
Marshak wave energy comparison
Energy comparison · 32³ cells · t = 6.000000e+01 code time
Nonequilibrium radiation diffusion

Marshak wave

Boundary illumination heats initially cold stationary material. Radiation and material energy profiles are compared with the semi-analytic Marshak diffusion solution.

1 completed resolution

Setup & all results →
Combined plot reportAll norms CSVBatch metadata