# hotcore

Fortran module: `hotcore`

## Parameters

User-configurable parameters (can be set via `param_dict`):

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `coflag` | `<class 'numpy.ndarray'>` | `0` |  |
| `log_radius_sampling` | `<class 'numpy.ndarray'>` | `0` |  |
| `maxtemp` | `<class 'numpy.ndarray'>` | `0.0` |  |
| `solidflag` | `<class 'numpy.ndarray'>` | `0` |  |
| `td_r` | `<class 'numpy.ndarray'>` | `0.0` |  |
| `tempa` | `float64[(6,)]` | `array(6,)` |  |
| `tempb` | `float64[(6,)]` | `array(6,)` |  |
| `timestep_fixed_late_years` | `<class 'numpy.ndarray'>` | `100000.0` |  |
| `timestep_resolution_factor_heating` | `<class 'numpy.ndarray'>` | `2.0` |  |
| `timestep_resolution_factor_hot` | `<class 'numpy.ndarray'>` | `1.0` |  |
| `u_r` | `<class 'numpy.ndarray'>` | `0.0` |  |
| `volcflag` | `<class 'numpy.ndarray'>` | `0` |  |

## Constants (Read-Only)

Fortran PARAMETER constants (compile-time values):

| Constant | Type | Value |
|----------|------|-------|
| `codestemp` | `float64[(6,)]` | `array(6,)` |
| `dp` | `<class 'numpy.ndarray'>` | `8` |
| `nmasses` | `<class 'numpy.ndarray'>` | `6` |
| `solidtemp` | `float64[(6,)]` | `array(6,)` |
| `volctemp` | `float64[(6,)]` | `array(6,)` |

## Internal Variables

```{dropdown} Internal solver variables (advanced)
| Variable | Type | Current Value |
|----------|------|---------------|
| `tempindx` | `<class 'numpy.ndarray'>` | `0` |
```

## Runtime Access

Access `hotcore` parameters at runtime using `uclchem.advanced.GeneralSettings()`.
See [Accessing Fortran Parameters](index.html#accessing-fortran-parameters-at-runtime) on the main Fortran API page for examples.