Effects of magnetic islands on drift wave instability
Abstract
Here, magnetic islands have been utilized in the gyrokinetic toroidal code to examine the effects of the islands on microturbulence. The pressure profile flattening is verified in the simulation with the islands. Simulations of ion temperature gradient instability find that different toroidal modes are linearly coupled together and that toroidal spectra become broader when the island width increases. The real frequencies and growth rates of different toroidal modes approach each other with the averaged value independent of the island width. The linear mode structures are enhanced at the island separatrices and weakened at the island centers, consistent with the flattening of the pressure profile inside the islands.
- Authors:
-
[1];
[2];
- Peking Univ., Beijing (China); Univ. of California, Irvine, CA (United States)
- Univ. of California, Irvine, CA (United States)
- Peking Univ., Beijing (China)
- Publication Date:
- Research Org.:
- Univ. of California, Oakland, CA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Univ. of California, Irvine, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1565334
- Alternate Identifier(s):
- OSTI ID: 1226604
- Grant/Contract Number:
- AC02-05CH11231; AC05-00OR22725; FG02-07ER54916; SC0010416
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 21; Journal Issue: 12; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Jiang, P., Lin, Z., Holod, I., and Xiao, C. Effects of magnetic islands on drift wave instability. United States: N. p., 2014.
Web. doi:10.1063/1.4903910.
Jiang, P., Lin, Z., Holod, I., & Xiao, C. Effects of magnetic islands on drift wave instability. United States. https://doi.org/10.1063/1.4903910
Jiang, P., Lin, Z., Holod, I., and Xiao, C. Fri .
"Effects of magnetic islands on drift wave instability". United States. https://doi.org/10.1063/1.4903910. https://www.osti.gov/servlets/purl/1565334.
@article{osti_1565334,
title = {Effects of magnetic islands on drift wave instability},
author = {Jiang, P. and Lin, Z. and Holod, I. and Xiao, C.},
abstractNote = {Here, magnetic islands have been utilized in the gyrokinetic toroidal code to examine the effects of the islands on microturbulence. The pressure profile flattening is verified in the simulation with the islands. Simulations of ion temperature gradient instability find that different toroidal modes are linearly coupled together and that toroidal spectra become broader when the island width increases. The real frequencies and growth rates of different toroidal modes approach each other with the averaged value independent of the island width. The linear mode structures are enhanced at the island separatrices and weakened at the island centers, consistent with the flattening of the pressure profile inside the islands.},
doi = {10.1063/1.4903910},
journal = {Physics of Plasmas},
number = 12,
volume = 21,
place = {United States},
year = {Fri Dec 12 00:00:00 EST 2014},
month = {Fri Dec 12 00:00:00 EST 2014}
}
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Works referencing / citing this record:
Gyrokinetic simulation study of magnetic island effects on neoclassical physics and micro-instabilities in a realistic KSTAR plasma
journal, May 2018
- Kwon, Jae-Min; Ku, S.; Choi, M. J.
- Physics of Plasmas, Vol. 25, Issue 5
Loss of bootstrap current in vicinity of magnetic islands
journal, May 2019
- Wang, Feng; Li, Jiquan; Qu, Hongpeng
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Global gyrokinetic simulation of microturbulence with kinetic electrons in the presence of magnetic island in tokamak
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Effects of magnetic islands on bootstrap current in toroidal plasmas
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Gyrokinetic simulations of nonlinear interactions between magnetic islands and microturbulence
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