Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics

Ogata, D.; Newman, D. E.; Sánchez, R.

doi:10.1063/1.4993209

Title: Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics

Abstract

The reduction of turbulent transport across sheared flow regions has been known for a long time in magnetically confined toroidal plasmas. However, details of the dynamics are still unclear, in particular, in what refers to the changes caused by the flow on the nature of radial transport itself. In Paper II, we have shown in a simplified model of drift wave turbulence that, when the background profile is allowed to evolve self-consistently with fluctuations, a variety of transport regimes ranging from superdiffusive to subdiffusive open up depending on the properties of the underlying turbulence. In this study, we show that externally applied sheared flows can, under the proper conditions, cause the transport dynamics to be diffusive or subdiffusive

Authors:

^[1]; Newman, D. E. ^[1]; Sánchez, R. ^[2]

Univ. of Alaska, Fairbanks, AK (United States)
Univ. Carlos III, Madrid (Spain)

Publication Date:: Tue Jul 18 00:00:00 EDT 2017

Research Org.:: Univ. of Alaska, Fairbanks, AK (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1474294

Alternate Identifier(s):: OSTI ID: 1371793

Grant/Contract Number:: FG02-04ER54741

Resource Type:: Accepted Manuscript

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 24; Journal Issue: 7; Journal ID: ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats


                    Ogata, D., Newman, D. E., and Sánchez, R. Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics.  United States: N. p., 2017. 
Web.  doi:10.1063/1.4993209.

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                    Ogata, D., Newman, D. E., & Sánchez, R. Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics.  United States.  https://doi.org/10.1063/1.4993209

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                    Ogata, D., Newman, D. E., and Sánchez, R. Tue .  
"Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics".  United States.  https://doi.org/10.1063/1.4993209.  https://www.osti.gov/servlets/purl/1474294.

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@article{osti_1474294,

  title        = {Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics},

  author       = {Ogata, D. and Newman, D. E. and Sánchez, R.},

  abstractNote = {The reduction of turbulent transport across sheared flow regions has been known for a long time in magnetically confined toroidal plasmas. However, details of the dynamics are still unclear, in particular, in what refers to the changes caused by the flow on the nature of radial transport itself. In Paper II, we have shown in a simplified model of drift wave turbulence that, when the background profile is allowed to evolve self-consistently with fluctuations, a variety of transport regimes ranging from superdiffusive to subdiffusive open up depending on the properties of the underlying turbulence. In this study, we show that externally applied sheared flows can, under the proper conditions, cause the transport dynamics to be diffusive or subdiffusive},

  doi          = {10.1063/1.4993209},

  journal      = {Physics of Plasmas},

  number       = 7,

  volume       = 24,

  place        = {United States},

  year         = {Tue Jul 18 00:00:00 EDT 2017},

  month        = {Tue Jul 18 00:00:00 EDT 2017}

}

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Title: Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics

Abstract

Citation Formats

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A model realization of self‐organized criticality for plasma confinement journal, August 1996

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Nature of turbulent transport across sheared zonal flows: insights from gyrokinetic simulations journal, May 2011

Investigation of the interaction between competing types of nondiffusive transport in drift wave turbulence journal, May 2017

Transport properties of energetic particles in a turbulent electrostatic field journal, March 1997

Dispersion of ideal particles in a two-dimensional model of electrostatic turbulence journal, December 1999

Turbulent flux and the diffusion of passive tracers in electrostatic turbulence journal, July 2003

Fractional Lévy motion through path integrals journal, January 2009

Renormalization of tracer turbulence leading to fractional differential equations journal, July 2006

The dynamics of long wavelength electrostatic turbulence in tokamaks* journal, May 1994

Finite Larmor radius effects on test particle transport in drift wave-zonal flow turbulence journal, January 2010

The random walk's guide to anomalous diffusion: a fractional dynamics approach journal, December 2000

Properties of a two‐nonlinearity model for drift‐wave turbulence journal, August 1995

On the interaction of turbulence and flows in toroidal plasmas journal, January 2011

Statistical properties and correlation functions for drift waves journal, January 1986

Bifurcation in electrostatic resistive drift wave turbulence journal, October 2007

Drift waves and transport journal, April 1999

Fluid limit of nonintegrable continuous-time random walks in terms of fractional differential equations journal, January 2005

On the dynamics of turbulent transport near marginal stability journal, October 1995

Zonal flow generation and its feedback on turbulence production in drift wave turbulence journal, April 2013

The dynamics of sandpiles with a sheared flow journal, July 1996

Suppression of turbulence and transport by sheared flow journal, January 2000

Nonlinear drift-wave structures and their influence on particle transport journal, May 1997

Evidence for strange kinetics in Hasegawa-Mima turbulent transport journal, March 2000

Self-Regulating Shear Flow Turbulence: A Paradigm for the L to H Transition journal, April 1994

SUNDIALS: Suite of nonlinear and differential/algebraic equation solvers journal, September 2005

Chaos, fractional kinetics, and anomalous transport
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Kelvin–Helmholtz instability and vortices in magnetized plasma
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Self-similarity of the plasma edge fluctuations
journal, October 1998

Nature of Transport across Sheared Zonal Flows in Electrostatic Ion-Temperature-Gradient Gyrokinetic Plasma Turbulence
journal, November 2008

A model realization of self‐organized criticality for plasma confinement
journal, August 1996

Instabilities and vortex dynamics in shear flow of magnetized plasmas
journal, April 1991

The dynamics of spectral transfer in a model of drift wave turbulence with two nonlinearities
journal, April 1993

Self-organized criticality and the dynamics of near-marginal turbulent transport in magnetically confined fusion plasmas
journal, November 2015

A two‐nonlinearity model of dissipative drift wave turbulence
journal, April 1993

Nature of turbulent transport across sheared zonal flows: insights from gyrokinetic simulations
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Investigation of the interaction between competing types of nondiffusive transport in drift wave turbulence
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Transport properties of energetic particles in a turbulent electrostatic field
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Dispersion of ideal particles in a two-dimensional model of electrostatic turbulence
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Turbulent flux and the diffusion of passive tracers in electrostatic turbulence
journal, July 2003

Fractional Lévy motion through path integrals
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Renormalization of tracer turbulence leading to fractional differential equations
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The dynamics of long wavelength electrostatic turbulence in tokamaks*
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Finite Larmor radius effects on test particle transport in drift wave-zonal flow turbulence
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The random walk's guide to anomalous diffusion: a fractional dynamics approach
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Properties of a two‐nonlinearity model for drift‐wave turbulence
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