Interplay between fluctuation driven toroidal axisymmetric flows and resistive ballooning mode turbulence

Seto, H.; Xu, X. Q.; Dudson, B. D.; Yagi, M.

doi:10.1063/1.5086998

Title: Interplay between fluctuation driven toroidal axisymmetric flows and resistive ballooning mode turbulence

Abstract

An interplay between fluctuation driven toroidal axisymmetric flows (convective cell modes) and resistive ballooning mode turbulence after the pedestal collapse is numerically studied by a four-field reduced MHD model in the BOUT++ framework. The strong flow shear suppresses the radial transport of pressure filaments, and the pressure profile in the pedestal region is partially recovered. As a result, a secondary instability is quasilinearly excited, which yields a secondary collapse. Here, the subsequent damped oscillation is also analyzed by phase diagram analysis.

Authors:

^[1];

^[2];

^[3];

^[1]

National Institutes for Quantum and Radiological Science and Technology, Aomori (Japan)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of York, York (United Kingdom)

Publication Date:: 2019-05-14

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1568015

Alternate Identifier(s):: OSTI ID: 1512547

Report Number(s):: LLNL-JRNL-789211
Journal ID: ISSN 1070-664X; 987556; TRN: US2100255

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 26; Journal Issue: 5; 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


                    Seto, H., Xu, X. Q., Dudson, B. D., and Yagi, M. Interplay between fluctuation driven toroidal axisymmetric flows and resistive ballooning mode turbulence.  United States: N. p., 2019. 
Web.  doi:10.1063/1.5086998.

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                    Seto, H., Xu, X. Q., Dudson, B. D., & Yagi, M. Interplay between fluctuation driven toroidal axisymmetric flows and resistive ballooning mode turbulence.  United States.  https://doi.org/10.1063/1.5086998

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                    Seto, H., Xu, X. Q., Dudson, B. D., and Yagi, M. Tue .  
"Interplay between fluctuation driven toroidal axisymmetric flows and resistive ballooning mode turbulence".  United States.  https://doi.org/10.1063/1.5086998.  https://www.osti.gov/servlets/purl/1568015.

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@article{osti_1568015,

  title        = {Interplay between fluctuation driven toroidal axisymmetric flows and resistive ballooning mode turbulence},

  author       = {Seto, H. and Xu, X. Q. and Dudson, B. D. and Yagi, M.},

  abstractNote = {An interplay between fluctuation driven toroidal axisymmetric flows (convective cell modes) and resistive ballooning mode turbulence after the pedestal collapse is numerically studied by a four-field reduced MHD model in the BOUT++ framework. The strong flow shear suppresses the radial transport of pressure filaments, and the pressure profile in the pedestal region is partially recovered. As a result, a secondary instability is quasilinearly excited, which yields a secondary collapse. Here, the subsequent damped oscillation is also analyzed by phase diagram analysis.},

  doi          = {10.1063/1.5086998},

  journal      = {Physics of Plasmas},

  number       = 5,

  volume       = 26,

  place        = {United States},

  year         = {2019},

  month        = {5}

}

Copy to clipboard

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Title: Interplay between fluctuation driven toroidal axisymmetric flows and resistive ballooning mode turbulence

Abstract

Citation Formats

Ideal and resistive edge stability calculations with M3D-C1 journal, October 2010

Edge localized mode rotation and the nonlinear dynamics of filaments journal, April 2016

Nonlinear dynamics of rotating drift-tearing modes in tokamak plasmas journal, September 2008

Nonlinear magnetohydrodynamics simulation using high-order finite elements journal, March 2004

Evolution of magnetic Kubo number of stochastic magnetic fields during the edge pedestal collapse simulation journal, August 2018

PETSc Users Manual Revision 3.8 report, September 2017

Nonlinear Simulations of Peeling-Ballooning Modes with Anomalous Electron Viscosity and their Role in Edge Localized Mode Crashes journal, October 2010

Resistive Reduced MHD Modeling of Multi-Edge-Localized-Mode Cycles in Tokamak X -Point Plasmas journal, January 2015

MHD stability in X-point geometry: simulation of ELMs journal, June 2007

Flow shear induced fluctuation suppression in finite aspect ratio shaped tokamak plasma journal, May 1995

CVODE, A Stiff/Nonstiff ODE Solver in C journal, January 1996

Dynamics of Low-Intermediate–High-Confinement Transitions in Toroidal Plasmas journal, June 2013

The physics of edge localized modes (ELMs) and their role in power and particle exhaust journal, August 1996

Hot particle stabilization of ballooning modes in tokamaks journal, December 1987

BOUT++: A framework for parallel plasma fluid simulations journal, September 2009

Flux-driven simulations of turbulence collapse journal, March 2015

Modelling of ELM dynamics for DIII-D and ITER journal, June 2007

The physics and technology basis entering European system code studies for DEMO journal, October 2016

Hermes: global plasma edge fluid turbulence simulations journal, April 2017

A four-field model for tokamak plasma dynamics journal, January 1985

Generalized gyroviscous force and its effect on the momentum balance equation journal, March 1992

Scrape-Off Layer Turbulence Theory and Simulations journal, January 1998

Fluid simulations of tokamak turbulence in quasiballooning coordinates journal, November 1993

Shifted metric procedure for flux tube treatments of toroidal geometry: Avoiding grid deformation journal, February 2001

Influence of poloidal equilibrium rotation in MHD simulations of edge-localized modes journal, June 2010

Toward integrated multi-scale pedestal simulations including edge-localized-mode dynamics, evolution of edge-localized-mode cycles, and continuous fluctuations journal, May 2016

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Studies of power exhaust and divertor design for a 1.5 GW-level fusion power DEMO journal, October 2017

Simulation of edge localized modes using BOUT++ journal, April 2011

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Status and verification of edge plasma turbulence code BOUT journal, June 2009

Non-linear magnetohydrodynamic modeling of plasma response to resonant magnetic perturbations journal, October 2013

Zonal flows in plasma—a review journal, April 2005

PVODE, an ODE Solver for Parallel Computers journal, November 1999

Effects of E×B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices journal, May 1997

Plasma simulation studies using multilevel physics models journal, May 1999

Edge localized linear ideal magnetohydrodynamic instability studies in an extended-magnetohydrodynamic code journal, March 2010

Regime of Improved Confinement and High Beta in Neutral-Beam-Heated Divertor Discharges of the ASDEX Tokamak journal, November 1982

Zonal Flows and Transient Dynamics of the L − H Transition journal, May 2003

Geodesic Acoustic Waves in Hydromagnetic Systems journal, January 1968

Chapter 4: Power and particle control journal, June 2007

Bézier surfaces and finite elements for MHD simulations journal, August 2008

Hermes: Global plasma edge fluid turbulence simulations text, January 2016

Evolution of magnetic Kubo number of stochastic magnetic fields during the edge pedestal collapse simulation text, January 2018

Ideal and resistive edge stability calculations with M3D-C1
journal, October 2010

Edge localized mode rotation and the nonlinear dynamics of filaments
journal, April 2016

Nonlinear dynamics of rotating drift-tearing modes in tokamak plasmas
journal, September 2008

Nonlinear magnetohydrodynamics simulation using high-order finite elements
journal, March 2004

Evolution of magnetic Kubo number of stochastic magnetic fields during the edge pedestal collapse simulation
journal, August 2018

PETSc Users Manual Revision 3.8
report, September 2017

Nonlinear Simulations of Peeling-Ballooning Modes with Anomalous Electron Viscosity and their Role in Edge Localized Mode Crashes
journal, October 2010

Resistive Reduced MHD Modeling of Multi-Edge-Localized-Mode Cycles in Tokamak $X$ -Point Plasmas
journal, January 2015

MHD stability in X-point geometry: simulation of ELMs
journal, June 2007

Flow shear induced fluctuation suppression in finite aspect ratio shaped tokamak plasma
journal, May 1995

CVODE, A Stiff/Nonstiff ODE Solver in C
journal, January 1996

Dynamics of Low-Intermediate–High-Confinement Transitions in Toroidal Plasmas
journal, June 2013

The physics of edge localized modes (ELMs) and their role in power and particle exhaust
journal, August 1996

Hot particle stabilization of ballooning modes in tokamaks
journal, December 1987

BOUT++: A framework for parallel plasma fluid simulations
journal, September 2009

Flux-driven simulations of turbulence collapse
journal, March 2015

Modelling of ELM dynamics for DIII-D and ITER
journal, June 2007

The physics and technology basis entering European system code studies for DEMO
journal, October 2016

Hermes: global plasma edge fluid turbulence simulations
journal, April 2017

A four-field model for tokamak plasma dynamics
journal, January 1985

Generalized gyroviscous force and its effect on the momentum balance equation
journal, March 1992

Scrape-Off Layer Turbulence Theory and Simulations
journal, January 1998

Fluid simulations of tokamak turbulence in quasiballooning coordinates
journal, November 1993

Shifted metric procedure for flux tube treatments of toroidal geometry: Avoiding grid deformation
journal, February 2001

Influence of poloidal equilibrium rotation in MHD simulations of edge-localized modes
journal, June 2010

Toward integrated multi-scale pedestal simulations including edge-localized-mode dynamics, evolution of edge-localized-mode cycles, and continuous fluctuations
journal, May 2016

Impact of zonal flows on edge pedestal collapse
journal, September 2016

Studies of power exhaust and divertor design for a 1.5 GW-level fusion power DEMO
journal, October 2017

Simulation of edge localized modes using BOUT++
journal, April 2011

Low-to-high confinement transition simulations in divertor geometry
journal, May 2000

Status and verification of edge plasma turbulence code BOUT
journal, June 2009

Non-linear magnetohydrodynamic modeling of plasma response to resonant magnetic perturbations
journal, October 2013

Zonal flows in plasma—a review
journal, April 2005

PVODE, an ODE Solver for Parallel Computers
journal, November 1999

Effects of E×B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices
journal, May 1997

Plasma simulation studies using multilevel physics models
journal, May 1999

Edge localized linear ideal magnetohydrodynamic instability studies in an extended-magnetohydrodynamic code
journal, March 2010

Regime of Improved Confinement and High Beta in Neutral-Beam-Heated Divertor Discharges of the ASDEX Tokamak
journal, November 1982

Zonal Flows and Transient Dynamics of the $L − H$ Transition
journal, May 2003

Geodesic Acoustic Waves in Hydromagnetic Systems
journal, January 1968

Chapter 4: Power and particle control
journal, June 2007

Bézier surfaces and finite elements for MHD simulations
journal, August 2008

Hermes: Global plasma edge fluid turbulence simulations
text, January 2016

Evolution of magnetic Kubo number of stochastic magnetic fields during the edge pedestal collapse simulation
text, January 2018