# API Reference

Technical reference for the `flow_state` package.

## Package Architecture

See the [Architecture](architecture.md) page for a visual overview of how modules relate.

## Modules

*Autogenerated from source docstrings.*

- [FlowState](core.md): The main dataclass containing flow properties
- [Solvers](solvers.md): The `solve()` function and input combinations
- [Atmosphere](atmosphere.md): Atmosphere models and `AtmosphereState`
- [Transport](transport.md): Viscosity models (Sutherland, Keyes, etc.)