# Which file should I give TetraHenry®?

The documented TetraHenry® entry file is JSON. It connects the mesh to materials, excitation, calculation settings and outputs.

## Compatibility

Published standalone manual 1.1.40

Published guidance with release-applicability limits. Confirm package applicability before following this guide.

## Use the configuration as the entry point

The 1.1.40 manual requires a JSON input file containing the applicable settings and references. A mesh file alone does not provide the full simulation definition.

When InductEx® prepares a TetraHenry® calculation, inspect the configuration it generated and preserve its referenced files when investigating an engine failure.

## Check mesh semantics

The manual's modified FastHenry format assigns physical names to mesh entities. Material properties and excitation ports are specified through JSON; an ordinary FastHenry deck's embedded lambda, sigma or .external statements are not interchangeable with that interface.

## Match the engine release

The standalone manual, standalone download catalog and solver bundled with InductEx® can have different versions. This article describes the 1.1.40 manual; it is not a claim that every older or newer engine accepts identical settings.

## Sources and verification details

Recorded inputs/builds only. Complete walkthrough and final-package acceptance remain separate.



- published:tth-manual-1.1.40: Sections 1.2–1.3; materials and calculation settings
- owner:technical-review-20261102: TTH preferred as solver reference; exact manual/engine pairing remains to be confirmed

- Published reference located; maintained source repository and standalone executable walkthrough remain pending.
- Owner technical review and any unrecorded release/platform walkthroughs remain pending. Historical advice is not current-release qualification.

## Related guides

- [Run and validate a standalone TetraHenry® calculation](/knowledge-base/tetrahenry-complete-run)
- [TetraHenry® writes a result but reports conflicting convergence status](/knowledge-base/tetrahenry-conflicting-status)
- [InductEx® cannot find i.txt or another generated output](/knowledge-base/inductex-missing-current-file)
- [InductEx® or TetraHenry® fails on Linux with a runtime-library error](/knowledge-base/inductex-linux-runtime)
- [Prepare a useful support report without exposing a licence or private design](/knowledge-base/support-effective-report)