Interaction between counter-rotating azimuthal and axial liquid metal flows in cylindrical channel
Phys. Rev. Fluids 10, 113701 – Published 20 November, 2025
DOI: https://doi.org/10.1103/7bs3-xt8t
Abstract
The mechanism of generation of a localized solitary azimuthal vortex in an axial liquid metal flow is found by numerical simulations. Initially, two counter-rotating magnetic field inducers create two vortices by electromagnetic forces in the cylindrical channel with an axial through flow of liquid metal. Beyond a certain threshold of azimuthal forcing, the second vortex is completely suppressed by the first counter-rotating vortex. The threshold value is reached when the Reynolds numbers for rotating and axial flows become equal. The solitary vortex has clear-cut boundaries. After the switch-off the driving forces, the solitary vortex is frozen in the axial flow when transferred by it.
