Showcase¶

This page ties figures you may see in the repository or publications to runnable entry points. Build and run instructions: quickstart.md, applications.md, examples_catalog.md.

Tungsten solidification (3D)¶

Tungsten PFC simulation (MovingBC, multi-panel view)

Representative large-scale solidification and defect structure (from project materials; parameters may differ from your run).

Property	Description
Typical app	`apps/tungsten` — JSON/TOML configs under `apps/tungsten/inputs_json/`
Concepts	3D PFC, boundary conditions, MPI + spectral FFT stack
Further reading	`app_pipeline.md`, `io_results.md`, root `README.md` (science overview)

Scaling study (step time vs resources)

Illustrative scaling results; your hardware and problem size will differ.

Property	Description
Context	HPC campaigns on large grids (e.g. LUMI); see `performance_profiling.md`, `lumi_slurm/README.md`
Typical app	Same `apps/tungsten` family with performance-oriented inputs (e.g. `tungsten_performance.json` — large domain; use for scaling studies, not first debug)

Cahn–Hilliard example animation

Property	Description
Materials app	`apps/cahn_hilliard` — Fe–Cr-like spinodal, JSON, VTK of `c`
Teaching example	`examples/12_cahn_hilliard` (see `examples_catalog.md`)
VTK / ParaView	Walkthrough: `tutorials/vtk_paraview_workflow.md`
Concepts	Fourth-order spectral ETD; \(k^4\) is a multiply

Property	Description
Runnable	`apps/surface_diffusion` — `smoothing.json`
VTK	height `h` under `results/surface_diffusion/`; mode-amplitude recipe in the app README
Concepts	Linear Mullins \(k^4\); \(h_k(t)=h_k(0)\exp(-B\vert k\vert ^4 t)\)

Property	Description
Runnable	`apps/kawahara` — `pulse.json`
VTK	height `u` under `results/kawahara/`
Concepts	Odd-order dispersion \(\omega=\beta k^3+\gamma k^5\); \(k^4\) here rotates, it does not damp

Property	Description
Runnable	`apps/ehd_film` — `relaxation.json`
VTK	gap `h` under `results/ehd_film/`
Concepts	Sixth-order bending lubrication; \(\lambda=-M_0 B k^6\)

Property	Description
Runnable	`apps/gradient_elasticity` — `inclusion.json` / `gaussian.json`
VTK	inclusion `g` and displacement `ux`,`uy` under `results/gradient_elasticity/`
Concepts	Helmholtz–Navier \((1-\ell^2\nabla^2)L_{\mathrm{navier}}\mathbf{u}=\mathbf{f}\); \(\ell\) regularizes high \(k\)

Property	Description
Runnable	`apps/thin_film` — `dewetting.json` / `leveling.json`
VTK	film height `h` under `results/thin_film/`
Concepts	Fourth-order capillary ETD; \(\lambda(k)=M_0 k^2(\Pi'(h_0)-\gamma k^2)\)

Property	Description
Runnable	`vlasov_run --case=weibel --device=hip --reduced-dir=DIR` — `apps/vlasov_maxwell`
Recipe	`showcase_weibel.sbatch` (8 GCDs)
ParaView	File → Open `reduced/weibel_f_xvx.xdmf` (and `Bz` / `Ey` / `Jy`)
Concepts	1D2V Weibel; paired linear \(\gamma\) arm; reduced movie frames

Store generated frames in your configured simulation output directory.

Property	Description
Runnable	`alloy_dendrite_hip_growth` — `apps/alloy_dendrite_elastic`
Recipe	`showcase_dendrite2d.sbatch` (8 GCDs)
ParaView	File → Open `fields_off/off.xdmf` and `fields_on/on.xdmf`
Concepts	isothermal free growth; device Green; Al-4.5wt%Cu; \(\lambda_{\mathrm{el}}=0\) vs \(\lambda\)

Store generated frames in your configured simulation output directory.

Property	Description
Runnable	`alloy_dendrite_hip_growth --nz=N` with \(N>1\)
Recipe	`showcase_dendrite3d.sbatch` (8 GCDs)
ParaView	File → Open `fields/dendrite3d.xdmf`
Concepts	spherical seed; isothermal; elasticity off until `HIP_MEM` bytes/cell; voxels + slices; 2048³ later

The Allen–Cahn demo can write grayscale PNG snapshots (optional final, or initial + final). No JSON App — CLI arguments only.

Property	Description
Runnable	`apps/allen_cahn` — e.g. `mpirun -n 4 ./apps/allen_cahn/allen_cahn 128 128 500 … initial.png final.png`
Concepts	2D explicit interface, FD + halos; PNG via `io_results.md`

End-to-step commands and expected files: tutorials/end_to_end_visualization.md.