Calculation of two-dimension radial electric field in boundary plasmas by using BOUT++
Abstract
The steady state radial electric field (Er) is measured by coupling a plasma transport model with the quasi-neutrality constraint and the vorticity equation within the BOUT++ framework. Due to the experimentally measured plasma density and temperature profiles in Alcator C-Mod discharges, the effective radial particle and heat diffusivities are inferred from the set of plasma transport equations. The effective diffusivities are then extended into the scrape-off layer (SOL) to calculate the plasma density, temperature and flow profiles across the separatrix into the SOL with the electrostatic sheath boundary conditions (SBC) applied on the divertor plates. Given these diffusivities, the electric field can be calculated self-consistently across the separatrix from the vorticity equation with SBC coupled to the plasma transport equations. The sheath boundary conditions act to generate a large and positive Er in the SOL, which is consistent with experimental measurements. The effect of magnetic particle drifts is shown to play a significant role on local particle transport and Er by inducing a net particle flow in both the edge and SOL regions.
- Authors:
-
- Dalian Univ. of Technology (China); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Chinese Academy of Sciences (CAS), Hefei (China)
- Dalian Univ. of Technology (China)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Natural Science Foundation of China (NSFC)
- OSTI Identifier:
- 1566019
- Alternate Identifier(s):
- OSTI ID: 1548560
- Report Number(s):
- LLNL-JRNL-737785
Journal ID: ISSN 0010-4655; 890841; TRN: US2000957
- Grant/Contract Number:
- AC52-07NA27344; FG02-97ER54392
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Computer Physics Communications
- Additional Journal Information:
- Journal Volume: 228; Journal Issue: C; Journal ID: ISSN 0010-4655
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Radial electric field; Tokamak boundary plasma transport; BOUT++
Citation Formats
Li, N. M., Xu, X. Q., Rognlien, T. D., Gui, B., Sun, J. Z., and Wang, D. Z. Calculation of two-dimension radial electric field in boundary plasmas by using BOUT++. United States: N. p., 2018.
Web. doi:10.1016/j.cpc.2018.03.003.
Li, N. M., Xu, X. Q., Rognlien, T. D., Gui, B., Sun, J. Z., & Wang, D. Z. Calculation of two-dimension radial electric field in boundary plasmas by using BOUT++. United States. https://doi.org/10.1016/j.cpc.2018.03.003
Li, N. M., Xu, X. Q., Rognlien, T. D., Gui, B., Sun, J. Z., and Wang, D. Z. Sat .
"Calculation of two-dimension radial electric field in boundary plasmas by using BOUT++". United States. https://doi.org/10.1016/j.cpc.2018.03.003. https://www.osti.gov/servlets/purl/1566019.
@article{osti_1566019,
title = {Calculation of two-dimension radial electric field in boundary plasmas by using BOUT++},
author = {Li, N. M. and Xu, X. Q. and Rognlien, T. D. and Gui, B. and Sun, J. Z. and Wang, D. Z.},
abstractNote = {The steady state radial electric field (Er) is measured by coupling a plasma transport model with the quasi-neutrality constraint and the vorticity equation within the BOUT++ framework. Due to the experimentally measured plasma density and temperature profiles in Alcator C-Mod discharges, the effective radial particle and heat diffusivities are inferred from the set of plasma transport equations. The effective diffusivities are then extended into the scrape-off layer (SOL) to calculate the plasma density, temperature and flow profiles across the separatrix into the SOL with the electrostatic sheath boundary conditions (SBC) applied on the divertor plates. Given these diffusivities, the electric field can be calculated self-consistently across the separatrix from the vorticity equation with SBC coupled to the plasma transport equations. The sheath boundary conditions act to generate a large and positive Er in the SOL, which is consistent with experimental measurements. The effect of magnetic particle drifts is shown to play a significant role on local particle transport and Er by inducing a net particle flow in both the edge and SOL regions.},
doi = {10.1016/j.cpc.2018.03.003},
journal = {Computer Physics Communications},
number = C,
volume = 228,
place = {United States},
year = {Sat Mar 17 00:00:00 EDT 2018},
month = {Sat Mar 17 00:00:00 EDT 2018}
}
Web of Science
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Works referencing / citing this record:
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