In a vortical manner; in terms of, or by means of, a vortex.
1990, David A. Clarke, An Overview of Computational MHD Jets and Their Comparisons with Recent High Resolution Radio Images, R. Beck, P. P. Kronberg, R. Wielebinski, Galactic and Intergalactic Magnetic Fields, International Astronomical Union Symposium No. 140, page 406,
This results when a small region, whose magnetic field is grossly amplified by vortically induced shear, is spun about the symmetry axis.