Octo-TIGER / Radiation verification

Radiation test problems

Transport, equilibrium, and radiation hydrodynamics. Open a problem for its physical setup, comparison method, sources, and results at every completed resolution.

All requested simulations and postprocessing are complete1 completed runseuler

Includes short-duration runs. These saved results use 32³ cells and end at 4000 s. Only one spatial resolution is shown, so these results do not measure a convergence order. Runs shorter than the benchmark duration do not establish developed shock or blast structure. Full-duration benchmark validation remains separate.

Awaiting completed results
Exact 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
Exact 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

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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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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

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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

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Radiating blast wave numerical hydro fields
Numerical fields · AMR levels 1–2; 32768 active cells; finest equivalent 32³ · t = 4.000000e+03 s
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.

1 completed resolution

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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 →
Combined plot reportAll norms CSVBatch metadata