Vortex Thermometry for Turbulent Two-Dimensional Fluids

Andrew J. Groszek; Matthew J. Davis; David M. Paganin; Kristian Helmerson; Tapio P. Simula

doi:10.1103/PhysRevLett.120.034504

Vortex Thermometry for Turbulent Two-Dimensional Fluids

Andrew J. Groszek, Matthew J. Davis, David M. Paganin, Kristian Helmerson, Tapio P. Simula

School of Physics and Astronomy

Research output: Contribution to journal › Article › Research › peer-review

21 Citations (Scopus)

Abstract

We introduce a new method of statistical analysis to characterize the dynamics of turbulent fluids in two dimensions. We establish that, in equilibrium, the vortex distributions can be uniquely connected to the temperature of the vortex gas, and we apply this vortex thermometry to characterize simulations of decaying superfluid turbulence. We confirm the hypothesis of vortex evaporative heating leading to Onsager vortices proposed in Phys. Rev. Lett. 113, 165302 (2014)PRLTAO0031-900710.1103/PhysRevLett.113.165302, and we find previously unidentified vortex power-law distributions that emerge from the dynamics.

Original language	English
Article number	034504
Number of pages	5
Journal	Physical Review Letters
Volume	120
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.120.034504
Publication status	Published - 19 Jan 2018

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10.1103/PhysRevLett.120.034504

226537830-oaFinal published version, 793 KB

Cite this

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abstract = "We introduce a new method of statistical analysis to characterize the dynamics of turbulent fluids in two dimensions. We establish that, in equilibrium, the vortex distributions can be uniquely connected to the temperature of the vortex gas, and we apply this vortex thermometry to characterize simulations of decaying superfluid turbulence. We confirm the hypothesis of vortex evaporative heating leading to Onsager vortices proposed in Phys. Rev. Lett. 113, 165302 (2014)PRLTAO0031-900710.1103/PhysRevLett.113.165302, and we find previously unidentified vortex power-law distributions that emerge from the dynamics.",

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AU - Simula, Tapio P.

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N2 - We introduce a new method of statistical analysis to characterize the dynamics of turbulent fluids in two dimensions. We establish that, in equilibrium, the vortex distributions can be uniquely connected to the temperature of the vortex gas, and we apply this vortex thermometry to characterize simulations of decaying superfluid turbulence. We confirm the hypothesis of vortex evaporative heating leading to Onsager vortices proposed in Phys. Rev. Lett. 113, 165302 (2014)PRLTAO0031-900710.1103/PhysRevLett.113.165302, and we find previously unidentified vortex power-law distributions that emerge from the dynamics.

AB - We introduce a new method of statistical analysis to characterize the dynamics of turbulent fluids in two dimensions. We establish that, in equilibrium, the vortex distributions can be uniquely connected to the temperature of the vortex gas, and we apply this vortex thermometry to characterize simulations of decaying superfluid turbulence. We confirm the hypothesis of vortex evaporative heating leading to Onsager vortices proposed in Phys. Rev. Lett. 113, 165302 (2014)PRLTAO0031-900710.1103/PhysRevLett.113.165302, and we find previously unidentified vortex power-law distributions that emerge from the dynamics.

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Vortex Thermometry for Turbulent Two-Dimensional Fluids

Abstract

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Other files and links

Motion of vortices in inhomogeneous Bose-Einstein condensates

Onsager vortex formation in Bose-Einstein condensates in two-dimensional power-law traps

Emergence of order from turbulence in an isolated planar superfluid

Determining the mass and geometric phase of a superfluid vortex

Life is swirl in flatland---2D turbulence in a superfluid

ARC Centre of Excellence for Particle Physics at the Tera-Scale

Cite this

Vortex Thermometry for Turbulent Two-Dimensional Fluids

Abstract

Access to Document

Other files and links

Research output

Motion of vortices in inhomogeneous Bose-Einstein condensates

Onsager vortex formation in Bose-Einstein condensates in two-dimensional power-law traps

Emergence of order from turbulence in an isolated planar superfluid

Projects

Determining the mass and geometric phase of a superfluid vortex

Life is swirl in flatland---2D turbulence in a superfluid

ARC Centre of Excellence for Particle Physics at the Tera-Scale

Cite this