MHD shear flow around growing hydrogen bubble (animation)
The wake of the detached bubble causes a strong convection of the electrolyte near the newly evolving bubble during its initial growth phase. After the wake flow dissapears, the flow around the bubble is governed by the Lorentz forces generated by the magnetic field (MHD effect). The generated shear flow forces the bubble to slowly slide away from the electrode and supports its detachment from the wall.
Dominik Baczyzmalski (Institute of Fluid Mechanics and Aerodynamics, Universität der Bundeswehr München, München, Germany)