Acceleration statistics in thermally driven superfluid turbulence
arXiv:1403.0411 · doi:10.1103/PhysRevE.89.033006
Abstract
New methods of flow visualization near absolute zero have opened the way to directly compare quantum turbulence (in superfluid helium) to classical turbulence (in ordinary fluids such as air or water) and explore analogies and differences. We present results of numerical simulations in which we examine the statistics of the superfluid acceleration in thermal counterflow. We find that, unlike the velocity, the acceleration obeys scaling laws similar to classical turbulence, in agreement with a recent quantum turbulence experiment of La Mantia et al.
arXiv comment5 pages, 5 figures, to appear in PRE
References in corpus (11)
- Emergence of turbulence in an oscillating Bose-Einstein condensate
- Multifractal statistics of Lagrangian velocity and acceleration in turbulence
- Characterization of reconnecting vortices in superfluid helium
- Velocity Statistics Distinguish Quantum Turbulence from Classical Turbulence
- Steady State of Counterflow Quantum Turbulence: Vortex filament Simulation with the Full Biot-Savart Law
- The 3D structure of the Lagrangian acceleration in turbulent flows
- Non classical velocity statistics in a turbulent atomic Bose Einstein condensate
- Spectrum of turbulent Kelvin-waves cascade in superfluid helium
- Thermally- and mechanically-driven quantum turbulence in helium II
- The sensitivity of the vortex filament method to different reconnection models
- Tree method for quantum vortex dynamics