MHD shear flow around growing hydrogen bubble (animation)

Evolution of the phase-averaged flow around the growing hydrogen bubble at B=180 mT. (Click on image to start the 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.

Contributed by:
Dominik Baczyzmalski (Institute of Fluid Mechanics and Aerodynamics, Universität der Bundeswehr München, München, Germany)