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Title: A flux-balanced fluid model for collisional plasma edge turbulence: Model derivation and basic physical features

Abstract

We propose a new reduced fluid model for the study of the drift wave–zonal flow dynamics in magnetically confined plasmas. Our model can be viewed as an extension of the classic Hasegawa-Wakatani (HW) model and is based on an improved treatment of the electron dynamics parallel to the field lines, to guarantee a balanced electron flux on the magnetic surfaces. Our flux-balanced HW (bHW) model contains the same drift-wave instability as previous HW models, but unlike these models, it converges exactly to the modified Hasegawa-Mima model in the collisionless limit. We rely on direct numerical simulations to illustrate some of the key features of the bHW model, such as the enhanced variability in the turbulent fluctuations and the existence of stronger and more turbulent zonal jets than the jets observed in other HW models, especially for high plasma resistivity. Our simulations also highlight the crucial role of the feedback of the third-order statistical moments in achieving a statistical equilibrium with strong zonal structures. Finally, we investigate the changes in the observed dynamics when more general dissipation effects are included and, in particular, when we include the reduced model for ion Landau damping originally proposed by Wakatani and Hasegawa.

Authors:
 [1]; ORCiD logo [1];  [1]
  1. New York Univ. (NYU), NY (United States)
Publication Date:
Research Org.:
New York Univ. (NYU), NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1610075
Alternate Identifier(s):
OSTI ID: 1478277
Grant/Contract Number:  
FG02-86ER53223; SC0012398
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 10; 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; Physics; Plasma confinement; Turbulent flows; Plasma instabilities

Citation Formats

Majda, Andrew J., Qi, Di, and Cerfon, Antoine J. A flux-balanced fluid model for collisional plasma edge turbulence: Model derivation and basic physical features. United States: N. p., 2018. Web. doi:10.1063/1.5049389.
Majda, Andrew J., Qi, Di, & Cerfon, Antoine J. A flux-balanced fluid model for collisional plasma edge turbulence: Model derivation and basic physical features. United States. https://doi.org/10.1063/1.5049389
Majda, Andrew J., Qi, Di, and Cerfon, Antoine J. Fri . "A flux-balanced fluid model for collisional plasma edge turbulence: Model derivation and basic physical features". United States. https://doi.org/10.1063/1.5049389. https://www.osti.gov/servlets/purl/1610075.
@article{osti_1610075,
title = {A flux-balanced fluid model for collisional plasma edge turbulence: Model derivation and basic physical features},
author = {Majda, Andrew J. and Qi, Di and Cerfon, Antoine J.},
abstractNote = {We propose a new reduced fluid model for the study of the drift wave–zonal flow dynamics in magnetically confined plasmas. Our model can be viewed as an extension of the classic Hasegawa-Wakatani (HW) model and is based on an improved treatment of the electron dynamics parallel to the field lines, to guarantee a balanced electron flux on the magnetic surfaces. Our flux-balanced HW (bHW) model contains the same drift-wave instability as previous HW models, but unlike these models, it converges exactly to the modified Hasegawa-Mima model in the collisionless limit. We rely on direct numerical simulations to illustrate some of the key features of the bHW model, such as the enhanced variability in the turbulent fluctuations and the existence of stronger and more turbulent zonal jets than the jets observed in other HW models, especially for high plasma resistivity. Our simulations also highlight the crucial role of the feedback of the third-order statistical moments in achieving a statistical equilibrium with strong zonal structures. Finally, we investigate the changes in the observed dynamics when more general dissipation effects are included and, in particular, when we include the reduced model for ion Landau damping originally proposed by Wakatani and Hasegawa.},
doi = {10.1063/1.5049389},
journal = {Physics of Plasmas},
number = 10,
volume = 25,
place = {United States},
year = {Fri Oct 19 00:00:00 EDT 2018},
month = {Fri Oct 19 00:00:00 EDT 2018}
}

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Works referenced in this record:

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Works referencing / citing this record:

Transient Metastability and Selective Decay for the Coherent Zonal Structures in Plasma Drift Wave Turbulence
journal, April 2019


Linear and nonlinear statistical response theories with prototype applications to sensitivity analysis and statistical control of complex turbulent dynamical systems
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  • Majda, Andrew J.; Qi, Di
  • Chaos: An Interdisciplinary Journal of Nonlinear Science, Vol. 29, Issue 10
  • DOI: 10.1063/1.5118690

Zonal Jet Creation from Secondary Instability of Drift Waves for Plasma Edge Turbulence
journal, November 2019


A flux-balanced fluid model for collisional plasma edge turbulence: Numerical simulations with different aspect ratios
journal, August 2019

  • Qi, Di; Majda, Andrew J.; Cerfon, Antoine J.
  • Physics of Plasmas, Vol. 26, Issue 8
  • DOI: 10.1063/1.5083845

Solitary zonal structures in subcritical drift waves: a minimum model
journal, March 2020

  • Zhou, Yao; Zhu, Hongxuan; Dodin, I. Y.
  • Plasma Physics and Controlled Fusion, Vol. 62, Issue 4
  • DOI: 10.1088/1361-6587/ab78f3