Quantifying Advantages of a Moving Mesh in Nuclear Hydrodynamics
arXiv:2502.02693 · doi:10.3847/1538-4357/adaeb0
Abstract
Many astrophysical explosions, such as type Ia supernovae, classical novae, and X-ray bursts, are dominated by thermonuclear runaway. To model these processes accurately, one must evolve nuclear reactions concurrently with hydrodynamics. We present an application of the moving mesh technique to this field of computation with the aim of explicitly testing the advantages of the method against the fixed mesh case. By way of traditional Strang splitting, our work couples a 13 isotope nuclear reaction network to a 1D moving mesh, Cartesian geometry hydrodynamics code. We explore three reacting problems: an acoustic pulse, a burning shock, and an advecting deflagration. Additionally using the shock jump conditions, we semi-analytically solve the burning shock problem under the assumption of quick, complete burning with the hope of establishing a useful and easy to set-up test problem. Strong moving mesh advantages are found in advecting, deflagrating flame fronts, where the technique dramatically reduces numerical diffusion that would otherwise lead to very fast artificial deflagration.
arXiv comment13 pages, 12 figures, 5 tables. ApJ accepted
References in corpus (17)
- E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
- Helium-ignited violent mergers as a unified model for normal and rapidly declining Type Ia Supernovae
- CASTRO: A New Compressible Astrophysical Solver. I. Hydrodynamics and Self-Gravity
- Head-on collisions of white dwarfs in triple systems could explain type Ia supernova
- Three Hypervelocity White Dwarfs in Gaia DR2: Evidence for Dynamically Driven Double-Degenerate Double-Detonation Type Ia Supernovae
- Observational Predictions for Sub-Chandrasekhar Mass Explosions: Further Evidence for Multiple Progenitor Systems for Type Ia Supernovae
- TESS: A Relativistic Hydrodynamics Code on a Moving Voronoi Mesh
- Carbon-Oxygen Classical Novae are Galactic Li Producers as well as Potential Supernova Ia Progenitors
- On the fate of the secondary white dwarf in double-degenerate double-detonation Type Ia supernovae
- Jet Dynamics in Compact Object Mergers: GW170817 Likely had a Successful Jet
- DISCO: A 3D Moving-Mesh Magnetohydrodynamics Code Designed for the Study of Astrophysical Disks
- A One-Dimensional Model for Rayleigh-Taylor Instability in Supernova Remnants
- Rich: Open Source Hydrodynamic Simulation on a Moving Voronoi Mesh
- Improved Coupling of Hydrodynamics and Nuclear Reactions via Spectral Deferred Corrections
- Numerical Stability of Detonations in White Dwarf Simulations
- Dynamics of Laterally Propagating Flames in X-ray Bursts. I. Burning Front Structure
- Comments on "Numerical Stability of Detonations in White Dwarf Simulations"