Impact of inward turbulence spreading on energy loss of edge-localized modes
Abstract
Nonlinear two-fluid and gyrofluid simulations show that an edge localized modes(ELM) crash has two phases: fast initial crash of ion temperature perturbation on the Alfvén time scale and slow turbulence spreading. The turbulencetransport phase is a slow encroachment of electron temperature perturbation due to the ELM event into pedestal region. Because of the inward turbulence spreading effect, the energy loss of an ELM decreases when density pedestal height increases. The Landau resonance yields the different cross phase-shift of ions and electrons. A 3 + 1 gyro-Landau-fluid model is implemented in BOUT++ framework. As a result, the gyrofluid simulations show that the kinetic effects have stabilizing effects on the ideal ballooning mode and the energy loss increases with the pedestal height.
- Authors:
-
[2];
- Peking Univ., Beijing (China); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Chinese Academy of Sciences, Hefei (China)
- General Atomics, San Diego, CA (United States)
- NFRI, Daejeon (South Korea). WCI Center for Fusion Theory
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1305894
- Alternate Identifier(s):
- OSTI ID: 1228617
- Report Number(s):
- LLNL-JRNL-664403
Journal ID: ISSN 1070-664X; PHPAEN
- Grant/Contract Number:
- AC52-07NA27344; AC52-7NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 5; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION; collisional energy loss; turbulence simulations; turbulence effects; ion temperature gradient mode; edge localized modes
Citation Formats
Ma, C. H., Xu, X. Q., Xi, P. W., Xia, T. Y., Snyder, P. B., and Kim, S. S. Impact of inward turbulence spreading on energy loss of edge-localized modes. United States: N. p., 2015.
Web. doi:10.1063/1.4920963.
Ma, C. H., Xu, X. Q., Xi, P. W., Xia, T. Y., Snyder, P. B., & Kim, S. S. Impact of inward turbulence spreading on energy loss of edge-localized modes. United States. https://doi.org/10.1063/1.4920963
Ma, C. H., Xu, X. Q., Xi, P. W., Xia, T. Y., Snyder, P. B., and Kim, S. S. Mon .
"Impact of inward turbulence spreading on energy loss of edge-localized modes". United States. https://doi.org/10.1063/1.4920963. https://www.osti.gov/servlets/purl/1305894.
@article{osti_1305894,
title = {Impact of inward turbulence spreading on energy loss of edge-localized modes},
author = {Ma, C. H. and Xu, X. Q. and Xi, P. W. and Xia, T. Y. and Snyder, P. B. and Kim, S. S.},
abstractNote = {Nonlinear two-fluid and gyrofluid simulations show that an edge localized modes(ELM) crash has two phases: fast initial crash of ion temperature perturbation on the Alfvén time scale and slow turbulence spreading. The turbulencetransport phase is a slow encroachment of electron temperature perturbation due to the ELM event into pedestal region. Because of the inward turbulence spreading effect, the energy loss of an ELM decreases when density pedestal height increases. The Landau resonance yields the different cross phase-shift of ions and electrons. A 3 + 1 gyro-Landau-fluid model is implemented in BOUT++ framework. As a result, the gyrofluid simulations show that the kinetic effects have stabilizing effects on the ideal ballooning mode and the energy loss increases with the pedestal height.},
doi = {10.1063/1.4920963},
journal = {Physics of Plasmas},
number = 5,
volume = 22,
place = {United States},
year = {Mon May 18 00:00:00 EDT 2015},
month = {Mon May 18 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
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