Turbulence without inertia in quantum fluids
Demosthenes Kivotides
Abstract
Numerical calculations of Helium-II hydrodynamics show that a dense tangle of superfluid vortices induces in an initially stationary normal fluid a highly dissipative, complex, vortical flow pattern ("turbulence") with a -2.2 energy spectrum scaling exponent and fluctuations Reynolds number of order unity. In this normal fluid flow the effects of mutual friction excitation from the superfluid vortices and those of viscous stresses are of the same order. The results suggest that in previous experiments the dynamics of decaying, high Reynolds number, quantum turbulent flows could only weakly be affected by the quantized vortices. As a consequence, their energy spectra would be (to a very good approximation) the classical, Navier-Stokes type, energy spectra of the normal fluid component.
Create a lesson
Related papers
FlowReconBench: Accuracy, calibration and cost of learned and classical flow reconstruction from sparse sensors
Nicolas Tricard, Linzheng Wang, Jason Chen et al.
Odd Capillarity
Nadia Bihari Padhan, Axel Voigt
Experimental evaluation of Kolmogorov's first similarity hypothesis for shear-dependent viscosity fluids
Luciano Hergenreder, Serge Simoëns, Wernher Brevis
Interscale energy transfer in a propeller-driven homogeneous and isotropic turbulence generation device
Luciano Hergenreder, Serge Simoëns, Cristián Escauriaza et al.
A Drift-Diffusion Approach for Pearson Type IV Heavy-Tail Distributions
Daniele Belardinelli, Simone Benella, Mirko Stumpo et al.
A Finite Element Model for Fluid--Poroelastic Structure Interaction with Dissipative Interface
Mohammad Jannesari, Francesco Costanzo