Drag force on an oscillating object in quantum turbulence

Abstract

This paper reports results of the computation of the drag force exerted on an oscillating object in quantum turbulence in superfluid ${}^4$He. The drag force is calculated on the basis of numerical simulations of quantum turbulent flow about the object. The drag force is proportional to the square of the magnitude of the oscillation velocity, which is similar to that in classical turbulence at high Reynolds number. The drag coefficient is also calculated, and its value is found to be of the same order as that observed in previous experiments. The correspondence between quantum and classical turbulences is further clarified by examining the turbulence created by oscillating objects.

7 pages, 5 figures, 1 table

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Cited by in corpus (9)

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• Energy and angular momentum balance in wall-bounded superfluid turbulence
• Turbulence in quantum fluids
• Time-dependent nuclear energy-density functional theory toolkit for neutron star crust: Dynamics of a nucleus in a neutron superfluid
• Statistics of vortex loops emitted from quantum turbulence driven by an oscillating sphere
• Dynamics of pinned quantized vortices in superfluid ${}^4$He in a microelectromechanical oscillator
• Electrodynamics of Vortices in Quasi-2D Scalar Bose-Einstein Condensates
• Modelling turbulent flow of superfluid ${}^4$He past a rough solid wall in the $T=0$ limit