Influence of zonal flow and density on resistive drift wave turbulent transport
Abstract
The generations of zonal flow (ZF) and density (ZD) and their feedback on the resistive drift wave turbulent transport are investigated within the modified Hasegawa-Wakatani model. With proper normalization, the system is only controlled by an effective adiabatic parameter, α, where the ZF dominates the collisional drift wave (DW) turbulence in the adiabatic limit α>1. By conducting direct numerical simulations, we found that the ZF can significantly reduce the transport by trapping the DWs in the vicinities of its extrema for α>1, whereas the ZD itself has little impact on the turbulence but can only assist ZF to further decrease the transport by flattening the local plasma density gradient.
- Authors:
-
[1];
[1]
- Univ. of California, San Diego, La Jolla, CA (United States). Mechanical and Aerospace Engineering Dept.
- Publication Date:
- Research Org.:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1849549
- Alternate Identifier(s):
- OSTI ID: 1742061
- Grant/Contract Number:
- FG02-04ER54739
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 27; Journal Issue: 12; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Plasma waves; Turbulence simulations; Plasma flows
Citation Formats
Zhang, Yanzeng, and Krasheninnikov, Sergei I. Influence of zonal flow and density on resistive drift wave turbulent transport. United States: N. p., 2020.
Web. doi:10.1063/5.0025861.
Zhang, Yanzeng, & Krasheninnikov, Sergei I. Influence of zonal flow and density on resistive drift wave turbulent transport. United States. https://doi.org/10.1063/5.0025861
Zhang, Yanzeng, and Krasheninnikov, Sergei I. Wed .
"Influence of zonal flow and density on resistive drift wave turbulent transport". United States. https://doi.org/10.1063/5.0025861. https://www.osti.gov/servlets/purl/1849549.
@article{osti_1849549,
title = {Influence of zonal flow and density on resistive drift wave turbulent transport},
author = {Zhang, Yanzeng and Krasheninnikov, Sergei I.},
abstractNote = {The generations of zonal flow (ZF) and density (ZD) and their feedback on the resistive drift wave turbulent transport are investigated within the modified Hasegawa-Wakatani model. With proper normalization, the system is only controlled by an effective adiabatic parameter, α, where the ZF dominates the collisional drift wave (DW) turbulence in the adiabatic limit α>1. By conducting direct numerical simulations, we found that the ZF can significantly reduce the transport by trapping the DWs in the vicinities of its extrema for α>1, whereas the ZD itself has little impact on the turbulence but can only assist ZF to further decrease the transport by flattening the local plasma density gradient.},
doi = {10.1063/5.0025861},
journal = {Physics of Plasmas},
number = 12,
volume = 27,
place = {United States},
year = {Wed Dec 23 00:00:00 EST 2020},
month = {Wed Dec 23 00:00:00 EST 2020}
}
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