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Visualization of Superfluid Helium Flow
Matthew S. Paoletti, Ralph B. Fiorito, Katepalli R. Sreenivasan +1
We discuss an experimental technique to visualize the motion in the bulk of superfluid He by tracking micron-sized solid hydrogen tracers. The behavior of the tracers is comple…
Velocity Statistics Distinguish Quantum Turbulence from Classical Turbulence
M. S. Paoletti, Michael E. Fisher, K. R. Sreenivasan +1
By analyzing trajectories of solid hydrogen tracers, we find that the distributions of velocity in decaying quantum turbulence in superfluid He are strongly non-Gaussian with $…
Characterisation of superfluid vortices in helium II
Gregory P. Bewley, Daniel P. Lathrop, Katepalli R. Sreenivasan
Matter at low temperatures exhibits unusual properties such as superfluidity, superconductivity, Bose-Einstein condensation, and supersolidity. These states display quantum mechani…
On the effects of surrogacy of energy dissipation in determining the intermittency exponent in fully developed turbulence
J. Cleve, M. Greiner, K. R. Sreenivasan
The two-point correlation function of the energy dissipation, obtained from a one-point time record of an atmospheric boundary layer, reveals a rigorous power-law scaling with inte…