Numerical investigation on lithium transport in the edge plasma of EAST real-time- Li-injection experiments in the frame of BOUT++
Abstract
To study the transport of Li species in the plasma with real-time Li aerosol injection on EAST, a model has been developed by reducing Braginskii's equations, and implemented in the frame of BOUT++. The simulation results show that Li atoms propagate inwards since the Li injection, and their penetration depth depends on both the local plasma conditions along their path and initial injection velocity. It is also found that Li ions accumulate rapidly in the edge, and only a small fraction of Li species can transport cross the separatrix into the core. In the poloidal direction, Li ions drift swiftly downwards along the field lines, and transport much faster at the high field side than at the low field side. The interaction between background plasma and Li species plays a critical role in determining the edge plasma profile. It is found that real-time Li injection raises the plasma density in the pedestal region and reduces the plasma temperature, just as has been observed experimentally.
- Authors:
-
- Dalian Univ. of Technology, Dalian (China). School of Physics and Opto-Electronic Engineering
- Southwestern Inst. of Physics, Chengdu (China)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1568006
- Report Number(s):
- LLNL-JRNL-789247
Journal ID: ISSN 2352-1791; 987489; TRN: US2100003
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Materials and Energy
- Additional Journal Information:
- Journal Volume: 12; Journal Issue: C; Journal ID: ISSN 2352-1791
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BOUT++; Lithium injection; Edge plasma
Citation Formats
Li, N. M., Sun, J. Z., Wang, Z. H., Xu, X. Q., Sun, Z., Wang, L., Hu, J. S., and Wang, D. Z. Numerical investigation on lithium transport in the edge plasma of EAST real-time- Li-injection experiments in the frame of BOUT++. United States: N. p., 2017.
Web. doi:10.1016/j.nme.2016.12.009.
Li, N. M., Sun, J. Z., Wang, Z. H., Xu, X. Q., Sun, Z., Wang, L., Hu, J. S., & Wang, D. Z. Numerical investigation on lithium transport in the edge plasma of EAST real-time- Li-injection experiments in the frame of BOUT++. United States. https://doi.org/10.1016/j.nme.2016.12.009
Li, N. M., Sun, J. Z., Wang, Z. H., Xu, X. Q., Sun, Z., Wang, L., Hu, J. S., and Wang, D. Z. Tue .
"Numerical investigation on lithium transport in the edge plasma of EAST real-time- Li-injection experiments in the frame of BOUT++". United States. https://doi.org/10.1016/j.nme.2016.12.009. https://www.osti.gov/servlets/purl/1568006.
@article{osti_1568006,
title = {Numerical investigation on lithium transport in the edge plasma of EAST real-time- Li-injection experiments in the frame of BOUT++},
author = {Li, N. M. and Sun, J. Z. and Wang, Z. H. and Xu, X. Q. and Sun, Z. and Wang, L. and Hu, J. S. and Wang, D. Z.},
abstractNote = {To study the transport of Li species in the plasma with real-time Li aerosol injection on EAST, a model has been developed by reducing Braginskii's equations, and implemented in the frame of BOUT++. The simulation results show that Li atoms propagate inwards since the Li injection, and their penetration depth depends on both the local plasma conditions along their path and initial injection velocity. It is also found that Li ions accumulate rapidly in the edge, and only a small fraction of Li species can transport cross the separatrix into the core. In the poloidal direction, Li ions drift swiftly downwards along the field lines, and transport much faster at the high field side than at the low field side. The interaction between background plasma and Li species plays a critical role in determining the edge plasma profile. It is found that real-time Li injection raises the plasma density in the pedestal region and reduces the plasma temperature, just as has been observed experimentally.},
doi = {10.1016/j.nme.2016.12.009},
journal = {Nuclear Materials and Energy},
number = C,
volume = 12,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 2017},
month = {Tue Aug 01 00:00:00 EDT 2017}
}
Web of Science
Figures / Tables:
Works referenced in this record:
Conference Report on the 2nd International Symposium on Lithium Applications for Fusion Devices
journal, February 2012
- Ono, M.; Bell, M. G.; Hirooka, Y.
- Nuclear Fusion, Vol. 52, Issue 3
New Steady-State Quiescent High-Confinement Plasma in an Experimental Advanced Superconducting Tokamak
journal, February 2015
- Hu, J. S.; Sun, Z.; Guo, H. Y.
- Physical Review Letters, Vol. 114, Issue 5
Dependence of recycling and edge profiles on lithium evaporation in high triangularity, high performance NSTX H-mode discharges
journal, August 2015
- Maingi, R.; Osborne, T. H.; Bell, M. G.
- Journal of Nuclear Materials, Vol. 463
Influence of lithium coatings with large-area coverage on EAST plasma performance
journal, December 2014
- Sun, Z.; Hu, J. S.; Zuo, G. Z.
- Fusion Engineering and Design, Vol. 89, Issue 12
First results of lithium experiments on EAST and HT-7
journal, August 2011
- Zuo, G. Z.; Hu, J. S.; Li, J. G.
- Journal of Nuclear Materials, Vol. 415, Issue 1
Lithium coating for H-mode and high performance plasmas on EAST in ASIPP
journal, July 2013
- Zuo, G. Z.; Hu, J. S.; Li, J. G.
- Journal of Nuclear Materials, Vol. 438
An overview of lithium experiments on HT-7 and EAST during 2012
journal, December 2014
- Hu, J. S.; Ren, J.; Sun, Z.
- Fusion Engineering and Design, Vol. 89, Issue 12
Status and verification of edge plasma turbulence code BOUT
journal, June 2009
- Umansky, M. V.; Xu, X. Q.; Dudson, B.
- Computer Physics Communications, Vol. 180, Issue 6
BOUT++: A framework for parallel plasma fluid simulations
journal, September 2009
- Dudson, B. D.; Umansky, M. V.; Xu, X. Q.
- Computer Physics Communications, Vol. 180, Issue 9
Drift-ordered fluid equations for field-aligned modes in low-β collisional plasma with equilibrium pressure pedestals
journal, December 2003
- Simakov, Andrei N.; Catto, Peter J.
- Physics of Plasmas, Vol. 10, Issue 12
2D simulations of transport dynamics during tokamak fuelling by supersonic molecular beam injection
journal, March 2014
- Wang, Z. H.; Xu, X. Q.; Xia, T. Y.
- Nuclear Fusion, Vol. 54, Issue 4
The relationships between edge localized modes suppression, pedestal profiles and lithium wall coatings in NSTX
journal, September 2011
- Boyle, D. P.; Maingi, R.; Snyder, P. B.
- Plasma Physics and Controlled Fusion, Vol. 53, Issue 10
Figures / Tables found in this record: