Long-term and large-scale hydrodynamical simulations of migrating planets

TL;DR

This paper introduces a new remapping method for long-term, large-scale hydrodynamical simulations of migrating planets, enabling studies over disk lifetimes and multi-planet systems with improved accuracy.

Contribution

The authors develop a novel remapping technique for Eulerian codes that allows efficient, long-term simulations of planetary migration, addressing limitations of previous fixed-grid methods.

Findings

Validated the method with FARGO3D simulations.

Demonstrated potential for studying multi-planet migration.

Showed improved modeling of viscous evolution and co-orbital regions.

Abstract

We present a new method that allows long-term and large-scale hydrodynamical simulations of migrating planets over a grid-based Eulerian code. This technique, which consists in a remapping of the disk by tracking the planetary migration, enables runs of migrating planets over a time comparable to the age of protoplanetary disks. This method also has the potential to address efficiently problems related with migration of multi-planet systems in gaseous disks, and to improve current results of migration of massive planets by including global viscous evolution as well as detailed studies of the co-orbital region during migration. We perform different tests using the public code FARGO3D to validate this method and compare its results with those obtained using a classical fixed grid.