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Title: FY05 LDRD Final Report Coupled Turbulenc/Transport Model for Edge-Plasmas

Abstract

An edge-plasma simulation for tokamak fusion devices is developed that couples 3D turbulence and 2D transport, including detailed sources and sinks, to determine self-consistent steady-state plasma profiles. Relaxed iterative coupling is shown to be effective when edge turbulence is partially suppressed, for example, by shear E x B shear flow as occurs during the favorable H-mode region. Unsuppressed turbulence is found to lead to large, intermittent edge transport events where the coupling procedure can lead to substantial inaccuracies in describing the true time-averaged plasma behavior.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
900156
Report Number(s):
UCRL-TR-218800
TRN: US0702214
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 74 ATOMIC AND MOLECULAR PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLASMA; SHEAR; SIMULATION; TRANSPORT; TURBULENCE

Citation Formats

Rognlien, T, Cohen, R, LoDestro, L, Palasek, R, Umansky, M, and Xu, X. FY05 LDRD Final Report Coupled Turbulenc/Transport Model for Edge-Plasmas. United States: N. p., 2006. Web. doi:10.2172/900156.
Rognlien, T, Cohen, R, LoDestro, L, Palasek, R, Umansky, M, & Xu, X. FY05 LDRD Final Report Coupled Turbulenc/Transport Model for Edge-Plasmas. United States. doi:10.2172/900156.
Rognlien, T, Cohen, R, LoDestro, L, Palasek, R, Umansky, M, and Xu, X. Thu . "FY05 LDRD Final Report Coupled Turbulenc/Transport Model for Edge-Plasmas". United States. doi:10.2172/900156. https://www.osti.gov/servlets/purl/900156.
@article{osti_900156,
title = {FY05 LDRD Final Report Coupled Turbulenc/Transport Model for Edge-Plasmas},
author = {Rognlien, T and Cohen, R and LoDestro, L and Palasek, R and Umansky, M and Xu, X},
abstractNote = {An edge-plasma simulation for tokamak fusion devices is developed that couples 3D turbulence and 2D transport, including detailed sources and sinks, to determine self-consistent steady-state plasma profiles. Relaxed iterative coupling is shown to be effective when edge turbulence is partially suppressed, for example, by shear E x B shear flow as occurs during the favorable H-mode region. Unsuppressed turbulence is found to lead to large, intermittent edge transport events where the coupling procedure can lead to substantial inaccuracies in describing the true time-averaged plasma behavior.},
doi = {10.2172/900156},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 09 00:00:00 EST 2006},
month = {Thu Feb 09 00:00:00 EST 2006}
}

Technical Report:

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