Outputs (4)

REMIX SPH – improving mixing in smoothed particle hydrodynamics simulations using a generalised, material-independent approach (2025)
Journal Article
Sandnes, T. D., Eke, V. R., Kegerreis, J. A., Massey, R. J., Ruiz-Bonilla, S., Schaller, M., & Teodoro, L. F. (2025). REMIX SPH – improving mixing in smoothed particle hydrodynamics simulations using a generalised, material-independent approach. Journal of Computational Physics, 532, Article 113907. https://doi.org/10.1016/j.jcp.2025.113907

We present REMIX, a smoothed particle hydrodynamics (SPH) scheme designed to alleviate effects that typically suppress mixing and instability growth at density discontinuities in SPH simulations. We approach this problem by directly targeting sources... Read More about REMIX SPH – improving mixing in smoothed particle hydrodynamics simulations using a generalised, material-independent approach.

Origin of Mars’s moons by disruptive partial capture of an asteroid (2024)
Journal Article
Kegerreis, J. A., Lissauer, J. J., Eke, V. R., Sandnes, T. D., & Elphic, R. C. (2025). Origin of Mars’s moons by disruptive partial capture of an asteroid. Icarus, 425, Article 116337. https://doi.org/10.1016/j.icarus.2024.116337

The origin of Mars’s small moons, Phobos and Deimos, remains unknown. They are typically thought either to be captured asteroids or to have accreted from a debris disk produced by a giant impact. Here, we present an alternative scenario wherein fragm... Read More about Origin of Mars’s moons by disruptive partial capture of an asteroid.

Swift: A modern highly-parallel gravity and smoothed particle hydrodynamics solver for astrophysical and cosmological applications (2024)
Journal Article
Schaller, M., Borrow, J., Draper, P. W., Ivkovic, M., McAlpine, S., Vandenbroucke, B., Bahé, Y., Chaikin, E., Chalk, A. B. G., Chan, T. K., Correa, C., van Daalen, M., Elbers, W., Gonnet, P., Hausammann, L., Helly, J., Huško, F., Kegerreis, J. A., Nobels, F. S. J., Ploeckinger, S., …Xiang, Z. (2024). Swift: A modern highly-parallel gravity and smoothed particle hydrodynamics solver for astrophysical and cosmological applications. Monthly Notices of the Royal Astronomical Society, 530(2), 2378–2419. https://doi.org/10.1093/mnras/stae922

Numerical simulations have become one of the key tools used by theorists in all the fields of astrophysics and cosmology. The development of modern tools that target the largest existing computing systems and exploit state-of-the-art numerical method... Read More about Swift: A modern highly-parallel gravity and smoothed particle hydrodynamics solver for astrophysical and cosmological applications.

Dealing with density discontinuities in planetary SPH simulations (2022)
Journal Article
Ruiz-Bonilla, S., Borrow, J., Eke, V., Kegerreis, J., Massey, R., Sandnes, T., & Teodoro, L. (2022). Dealing with density discontinuities in planetary SPH simulations. Monthly Notices of the Royal Astronomical Society, 512(3), 4660-4668. https://doi.org/10.1093/mnras/stac857

Density discontinuities cannot be precisely modelled in standard formulations of smoothed particles hydrodynamics (SPH) because the density field is defined smoothly as a kernel-weighted sum of neighbouring particle masses. This is a problem when per... Read More about Dealing with density discontinuities in planetary SPH simulations.