Abstract
We provide experimental and numerical evidence of in-blades vortices in the von Kármán swirling flow. We estimate the associated kinematic -effect tensor and show that it is compatible with recent models of the von Kármán sodium (VKS) dynamo. We further show that depending on the relative frequency of the two impellers, the dominant dynamo mechanism may switch from to dynamo. We discuss some implications of these results for VKS experiments.
- Received 18 January 2012
DOI:https://doi.org/10.1103/PhysRevLett.109.024503
© 2012 American Physical Society