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-subcritical_shock-m1

Saved-state movie

Subcritical Shock · L2 · M1 RK1

121 stored states; 121 shown. Physical time: 0–38300 s. 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, 319.166667, 638.333333, 957.5, 1276.66667, 1915, 2234.16667, 2553.33333, 2872.5, 3191.66667, 3510.83333, 3830, 4149.16667, 4468.33333, 4787.5, 5106.66667, 5425.83333, 5745, 6064.16667, 6383.33333, 6702.5, 7021.66667, 7340.83333, 7660, 7979.16667, 8298.33333, 8617.5, 8936.66667, 9255.83333, 9575, 9894.16667, 10213.3333, 10532.5, 10851.6667, 11170.8333, 11490, 11809.1667, 12128.3333, 12447.5, 12766.6667, 13085.8333, 13405, 13724.1667, 14043.3333, 14362.5, 14681.6667, 15000.8333, 15320, 15639.1667, 15958.3333, 16277.5, 16596.6667, 16915.8333, 17235, 17554.1667, 17873.3333, 18192.5, 18511.6667, 18830.8333, 19150, 19469.1667, 19788.3333, 20107.5, 20426.6667, 20745.8333, 21065, 21384.1667, 21703.3333, 22022.5, 22341.6667, 22660.8333, 22980, 23299.1667, 23618.3333, 23937.5, 24256.6667, 24575.8333, 24895, 25214.1667, 25533.3333, 25852.5, 26171.6667, 26490.8333, 26810, 27129.1667, 27448.3333, 27767.5, 28086.6667, 28405.8333, 28725, 29044.1667, 29363.3333, 29682.5, 30001.6667, 30320.8333, 30640, 30959.1667, 31278.3333, 31597.5, 31916.6667, 32235.8333, 32555, 32874.1667, 33193.3333, 33512.5, 33831.6667, 34150.8333, 34470, 34789.1667, 35108.3333, 35427.5, 35746.6667, 36065.8333, 36385, 36704.1667, 37023.3333, 37342.5, 37661.6667, 37980.8333, 38300, 38300 s.

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

Movies show saved numerical states; no applicable analytic reference is recorded.

Central z=0+ radiation energy slice with faint cell mesh and equal-length flux direction arrows. Arrows show the independently evolved M1 radiation flux. Gray density contours and a matching density/velocity panel. Synchronized gas and radiation temperature profiles along the central x line appear below the maps. Fixed color limits; actual stored Silo times held without solution interpolation. Movies show saved numerical states; no applicable analytic reference is recorded. The maps show the full simulation domain without cropping. The temperature profile also spans the full domain.

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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

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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

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Subcritical radiative shock numerical fields
Numerical fields · 32³ cells · t = 3.830000e+04 s
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.

1 completed resolution

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 →
Awaiting completed results
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.

0 completed resolutions

Setup & all results →
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