# Installation

## Requirements

- Python 3.8 or later
- [NumPy](https://numpy.org/)
- [CoolProp](http://www.coolprop.org/) — fluid property database

Both dependencies are installed automatically when you install CFDPre from PyPI.

## Install from PyPI

```bash
pip install cfdpre
```

## Install from source

```bash
git clone https://github.com/phsheth/cfdpre.git
cd cfdpre
pip install .
```

## Verify the installation

```python
import cfdpre
print(dir(cfdpre))
# [..., 'yhgrcalc']

from cfdpre import yhgrcalc
yhgrcalc("Air", 25, 1.01325, 0.5, 50, 1, 10)
```

If the call returns a dictionary of fluid properties and mesh-sizing values, you are
ready to go. See the [Quickstart](quickstart.md) next.