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Classical and non-classical flows of superfluids

By Carlo Barenghi

Also appears in collection : New challenges in mathematical modelling and numerical simulation of superfluids / Nouveaux défis dans la modélisation mathématique et la simulation numérique de systèmes superfluides

Superfluids are remarkable because they lack mechanisms of viscous dissipations, and because vorticity is concentrated in thin vortex lines - a property which arises from the existence and uniqueness of a macroscopic wave function. In this talk I shall review recent experiments and numerical simulations which reveal analogies and differences between the flow of ordinary fluids and the flow of superfluids. In particular, I shall describe conditions under which, in a homogeneous isotropic turbulent superfluid away from boundaries, the distribution of kinetic energy over the length scales is similar to the classical Kolmogorov distribution, and new insight into the properties of superfluid flow near boundaries.

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Citation data

  • DOI 10.24350/CIRM.V.19009003
  • Cite this video Barenghi, Carlo (27/06/2016). Classical and non-classical flows of superfluids. CIRM. Audiovisual resource. DOI: 10.24350/CIRM.V.19009003
  • URL https://dx.doi.org/10.24350/CIRM.V.19009003

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