# Density Conversion between 1-D and 3-D Stellar Models with 1D-MESA2HYDRO-3D

## TL;DR

This paper introduces 1D-MESA2HYDRO-3D, a Python tool that converts 1D stellar models into initial conditions for hydrodynamical simulations, validated across various stellar types.

## Contribution

The paper presents a new open-source software that accurately generates initial conditions from 1D stellar models for hydrodynamical simulations.

## Key findings

- Consistent density profiles and particle distributions after 10 dynamical times.
- Validated across supergiant and white dwarf models.
- Effective for diverse stellar structures.

## Abstract

We present 1D-MESA2HYDRO-3D, an open source, Python-based software tool that provides an accessible means of generating physically motivated initial conditions (ICs) for hydrodynamical simulations from 1-D stellar structure models. We test 1D-MESA2HYDRO-3D on five stellar models generated with the MESA stellar evolution code and verify its capacity as an IC generator with the Phantom smoothed-particle hydrodynamics code \citep{MESAIV, Phantom}. Consistency between the input density profiles, the 1D-MESA2HYDRO-3D-rendered particle distributions, and the state of the distributions after evolution over $10$ dynamical timescales is found for model stars ranging in structure and density from a radially extended supergiant to a white dwarf.