Date: 2026-09-05 Purpose: Two thin-shell tape stacks driven from a SPICE netlist.

What it shows

A three-dimensional two-tape stack whose terminal pairs are driven by a circuit from tapestack.cir. The netlist contains a 500 A, 10 Hz current source in parallel with an inductor and a capacitor; its * belfem: comment lines set the integration order of the reactive components. The run lasts 150 ms.

Files

file	role
tapestack3d.geo	geometry; mesh it with gmsh
tapestack.cir	SPICE netlist of the lumped part
input.conf	deck

Run

gmsh -3 tapestack3d.geo -o tapestack3d.msh

../../build/bin/belfem # or mpirun -np 4 ../../build/bin/belfem

Shared launcher

../scripts/Allrun generates the mesh, chooses ranks and threads, and can submit to Slurm; ../scripts/Allclean removes run output. To use them from this directory, copy the two wrapper scripts Allrun and Allclean from examples/helix/ here and run ./Allrun (./Allrun --dry-run prints the plan first). If you copy this deck out of the tree, copy examples/scripts/ along with it and point the wrappers at its new location. The launcher does not build plugins; do that step by hand as described above. Per-deck settings go in a run.conf next to input.conf; see ../scripts/README.md.