Flow structure and concentration distribution in seemingly parallel magnetic and electric fields

We aim to show that flow field and concentration measurements are a valuable aid in understanding magnetoelectrochemical phenomena. Two examples, the flow field in a cylindrical cell and the concentration distribution near a circular millielectrode, will be discussed. Both cases have in common that at first sight electric and magnetic fields seem to be parallel. However, in reality, Lorentz forces are generated at locations, where the assumption of parallelism is locally violated, inducing convection phenomena of surprising complexity.