Compressible magnetohydrodynamic shock–vortex interaction and its impact on vorticity and energy transfer

The present study investigates the shock–vortex interaction in compressible magnetohydrodynamic flows, focusing on the influence of progressively increasing magnetic field strengths on flow morphology, vorticity evolution, and energy redistribution. The numerical simulations consider hydrodynamic and magnetized cases, analyzing the interaction between an incident shock wave and a solid wedge. The results reveal that magnetic fields significantly alter shock dynamics by stabilizing vortices, suppressing large-scale instabilities, and modifying the development of key flow structures such as reflected shocks, expansion fans, and slip lines. The evolution of vorticity components demonstrates a strong dependence on the magnetic field, with higher field strengths amplifying vorticity production while restricting vortex stretching. Energy analysis indicates that magnetic forces resist forward acceleration, leading to a reduction in streamwise kinetic energy while redistributing energy into transverse modes and magnetic fields. The presence of magnetic pressure and tension further regulates flow evolution by constraining vortex growth and influencing shock-induced mixing. Overall, this study provides insights into the complex interplay between shock-induced flow structures and magnetization, highlighting the role of magnetic fields in modifying compressible flow dynamics.