  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.

Solar and Stellar Astrophysics;Instrumentation and Methods for Astrophysics