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Title: Turbulent field fluctuations in gyrokinetic and fluid plasmas

Abstract

A key uncertainty in the design and development of magnetic confinement fusion energy reactors is predicting edge plasma turbulence. An essential step in overcoming this uncertainty is the validation in accuracy of reduced turbulent transport models. Drift-reduced Braginskii two-fluid theory is one such set of reduced equations that has for decades simulated boundary plasmas in experiment, but significant questions exist regarding its predictive ability. To this end, using a novel physics-informed deep learning framework, we demonstrate the first ever direct quantitative comparisons of turbulent field fluctuations between electrostatic two-fluid theory and electromagnetic gyrokinetic modelling with good overall agreement found in magnetized helical plasmas at low normalized pressure. This framework is readily adaptable to experimental and astrophysical environments, and presents a new technique for the numerical validation and discovery of reduced global plasma turbulence models.

Authors:
; ; ; ;
Publication Date:
DOE Contract Number:  
SC0014264; SC0014664; AC02-09CH11466; AR0001263
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1886304
DOI:
https://doi.org/10.7910/DVN/1KWQF7

Citation Formats

Mathews, Abhilash, Mandell, Noah, Francisquez, Manaure, Hughes, Jerry, and Hakim, Ammar. Turbulent field fluctuations in gyrokinetic and fluid plasmas. United States: N. p., 2021. Web. doi:10.7910/DVN/1KWQF7.
Mathews, Abhilash, Mandell, Noah, Francisquez, Manaure, Hughes, Jerry, & Hakim, Ammar. Turbulent field fluctuations in gyrokinetic and fluid plasmas. United States. doi:https://doi.org/10.7910/DVN/1KWQF7
Mathews, Abhilash, Mandell, Noah, Francisquez, Manaure, Hughes, Jerry, and Hakim, Ammar. 2021. "Turbulent field fluctuations in gyrokinetic and fluid plasmas". United States. doi:https://doi.org/10.7910/DVN/1KWQF7. https://www.osti.gov/servlets/purl/1886304. Pub date:Mon Jul 26 00:00:00 EDT 2021
@article{osti_1886304,
title = {Turbulent field fluctuations in gyrokinetic and fluid plasmas},
author = {Mathews, Abhilash and Mandell, Noah and Francisquez, Manaure and Hughes, Jerry and Hakim, Ammar},
abstractNote = {A key uncertainty in the design and development of magnetic confinement fusion energy reactors is predicting edge plasma turbulence. An essential step in overcoming this uncertainty is the validation in accuracy of reduced turbulent transport models. Drift-reduced Braginskii two-fluid theory is one such set of reduced equations that has for decades simulated boundary plasmas in experiment, but significant questions exist regarding its predictive ability. To this end, using a novel physics-informed deep learning framework, we demonstrate the first ever direct quantitative comparisons of turbulent field fluctuations between electrostatic two-fluid theory and electromagnetic gyrokinetic modelling with good overall agreement found in magnetized helical plasmas at low normalized pressure. This framework is readily adaptable to experimental and astrophysical environments, and presents a new technique for the numerical validation and discovery of reduced global plasma turbulence models.},
doi = {10.7910/DVN/1KWQF7},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {7}
}

Works referencing / citing this record:

Turbulent field fluctuations in gyrokinetic and fluid plasmas
journal, November 2021