7–11 Jul 2025
University of the Witwatersrand, Johannesburg
Africa/Johannesburg timezone
Registration open until 20 May 2025

Piston-Driven Shock Wave Test Problem for Validating Magnetohydrodynamic Models in Astrophysics

Not scheduled
2h 50m
Solomon Mahlangu House (University of the Witwatersrand, Johannesburg)

Solomon Mahlangu House

University of the Witwatersrand, Johannesburg

Poster Presentation Track D1 - Astrophysics Poster Session

Speaker

Magdeline Seabi (Nelson Mandela University)

Description

Computational magnetohydrodynamics (MHD) provides a powerful framework for modelling matter in extreme environments where both fluid dynamics and magnetic fields are critical. These conditions arise in heavy-ion collisions (HIC) and astrophysical events like core-collapse supernovae (CCSNe). To ensure solver accuracy, we validate our RMHD model using a piston-driven shock wave test problem, ideal for simulating the bounce stage of CCSNe, where a magnetised shock forms and propagates outward. Following validation, a complementary model for HIC will be developed to study early-stage shock evolution. This will enable the investigation of post-shock pressure and density profiles, flow coefficients (notably v2), and CME-induced charge separation. In CCSNe, we explore magnetic versus thermal pressure contributions and gravitational waveforms. Together, these observables allow for a comparative analysis of how magnetic fields influence shock propagation and structure in both astrophysical and high-energy nuclear systems.

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Primary author

Magdeline Seabi (Nelson Mandela University)

Co-author

Prof. Azwinndini Muronga (Nelson Mandela University)

Presentation materials

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