Solitary zonal structures in subcritical drift waves: a minimum model

Zhou, Yao; Zhu, Hongxuan; Dodin, I. Y.

doi:10.11578/1608313

Title: Solitary zonal structures in subcritical drift waves: a minimum model

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Abstract

Solitary zonal structures have recently been identified in gyrokinetic simulations of subcritical drift-wave (DW) turbulence with background shear flows.

Authors:: Zhou, Yao; Zhu, Hongxuan; Dodin, I. Y.

Publication Date:: Sun Mar 01 00:00:00 EST 2020

DOE Contract Number:: AC02-09CH11466

Research Org.:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Keywords:: drift waves; zonal flows; subcritical turbulence; solitons

OSTI Identifier:: 1608313

DOI:: https://doi.org/10.11578/1608313

Citation Formats


                    Zhou, Yao, Zhu, Hongxuan, and Dodin, I. Y. Solitary zonal structures in subcritical drift waves: a minimum model.  United States: N. p., 2020. 
        Web.  doi:10.11578/1608313.

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                    Zhou, Yao, Zhu, Hongxuan, & Dodin, I. Y. Solitary zonal structures in subcritical drift waves: a minimum model.  United States.  doi:https://doi.org/10.11578/1608313

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                    Zhou, Yao, Zhu, Hongxuan, and Dodin, I. Y. 2020.  
"Solitary zonal structures in subcritical drift waves: a minimum model".  United States.  doi:https://doi.org/10.11578/1608313.  https://www.osti.gov/servlets/purl/1608313. Pub date:Sun Mar 01 00:00:00 EST 2020

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@article{osti_1608313,

  title        = {Solitary zonal structures in subcritical drift waves: a minimum model},

  author       = {Zhou, Yao and Zhu, Hongxuan and Dodin, I. Y.},

  abstractNote = {Solitary zonal structures have recently been identified in gyrokinetic simulations of subcritical drift-wave (DW) turbulence with background shear flows.},

  doi          = {10.11578/1608313},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Mar 01 00:00:00 EST 2020},

  month        = {Sun Mar 01 00:00:00 EST 2020}

}

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DOI: https://doi.org/10.11578/1608313

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Solitary zonal structures in subcritical drift waves: a minimum model

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Solitary zonal structures have recently been identified in gyrokinetic simulations of subcritical drift-wave (DW) turbulence with background shear flows. However, the nature of these structures has not been fully understood yet. Here, we show that similar structures can be obtained within a reduced model, which complements the modified Hasegawa–Mima equation with a generic primary instability and a background shear flow. We also find that these structures can be qualitatively reproduced in the modified Hasegawa–Wakatani equation, which subsumes the reduced model as a limit. In particular, we illustrate that in both cases, the solitary zonal structures approximately satisfy the same 'equationmore »« less
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