## ∗ Low Mach hydro

pyro's low Mach hydrodynamics solver is designed for atmospheric flows. It captures the effects of stratification on a fluid element by enforcing a divergence constraint on the velocity field. Chapter 14 of the notes describe the basic algorithm:

As with the incompressible solver, we implement a cell-centered approximate projection method.

## ∗ Examples

### bubble

The bubble problem places a buoyant bubble in a stratified atmosphere and watches the development of the roll-up due to shear as it rises. This is run as:

./pyro.py lm_atm bubble inputs.bubble