Kinetic plasma-wall interaction using immersed boundary conditions

被引：1

作者：

Munschy, Yann ^{[1
]}

Bourne, Emily ^{[1
,2
]}

Dif-Pradalier, Guilhem ^{[1
]}

Donnel, Peter ^{[1
]}

Ghendrih, Philippe ^{[1
]}

Grandgirard, Virginie ^{[1
]}

Sarazin, Yanick ^{[1
]}

机构：

[1] CEA, IRFM, F-13108 St Paul Les Durance, France

[2] Ecole Polytech Fed Lausanne, SCITAS, CH-1015 Lausanne, Switzerland

来源：

NUCLEAR FUSION | 2024年 / 64卷 / 05期

基金：

欧盟地平线“2020”;

关键词：

Vlasov-Poisson system; immersed boundary conditions; penalization; gyrokinetics; kinetic sheath; kinetic plasma wall interaction; SHEATH; TRANSITION; TOKAMAK; TRANSPORT; ELECTRON; LIMITER; DRIVEN;

D O I：

10.1088/1741-4326/ad346c

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The interaction between a plasma and a solid surface is studied in a (1D-1V) kinetic approach using immersed boundary conditions and penalization to model the wall. Two solutions for the penalized wall region are investigated that either allow currents to flow within the material boundary or not. Essential kinetic aspects of sheath physics are recovered in both cases and their parametric dependencies investigated. Importantly, we show how the two approaches can be reconciled when accounting for relevant kinetic effects. Non-Maxwellian features of the ion and electron distribution functions are essential to capture the value of the potential drop in the sheath. These features lead to a sheath heat transmission factor for ions 60% larger than usually predicted and 35% for electrons. The role of collisions is discussed and means of incorporating minimally-relevant kinetic sheath physics in the gyrokinetic framework are discussed.

引用

页数：32

共 49 条

[21] Penalization modeling of a limiter in the Tokamak edge plasma
Isoardi, L.
Chiavassa, G.
Ciraolo, G.
Haldenwang, P.
Serre, E.
Ghendrih, Ph.
Sarazin, Y.
Schwander, F.
Tamain, P.
[J]. JOURNAL OF COMPUTATIONAL PHYSICS, 2010, 229 (06) : 2220 - 2235
[22] Joncquieres V., 2018, JOINT PROPULSION C, DOI [10.2514/6.2018-4905, DOI 10.2514/6.2018-4905]
[23] Gyrokinetic full-torus simulations of ohmic tokamak plasmas in circular limiter configuration
Korpilo, T.
Gurchenko, A. D.
Gusakov, E. Z.
Heikkinen, J. A.
Janhunen, S. J.
Kiviniemi, T. P.
Leerink, S.
Niskala, P.
Perevalov, A. A.
[J]. COMPUTER PHYSICS COMMUNICATIONS, 2016, 203 : 128 - 137
[24] The interaction of electron and positive ion space charges in cathode sheaths
Langmuir, I
[J]. PHYSICAL REVIEW, 1929, 33 (06): : 0954 - 0989
[25] Full-f electromagnetic gyrokinetic turbulence simulations of the edge and scrape-off layer of ASDEX Upgrade with GENE-X
Michels, Dominik
Ulbl, Philipp
Zholobenko, Wladimir
Body, Thomas
Stegmeir, Andreas
Eich, Thomas
Griener, Michael
Conway, Garrard D.
Jenko, Frank
[J]. PHYSICS OF PLASMAS, 2022, 29 (03)
[26] The plasma-wall transition with collisions and an oblique magnetic field: Reversal of potential drops at grazing incidences
Moritz, J.
Lesur, M.
Faudot, E.
Devaux, S.
Heuraux, S.
Ledig, J.
[J]. PHYSICS OF PLASMAS, 2019, 26 (01)
[27] Nicholson D. R., 1983, Introduction to Plasma Theory
[28] Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport
Pan, Q.
Told, D.
Jenko, F.
[J]. PHYSICS OF PLASMAS, 2016, 23 (10)
[29] A penalization technique to model plasma facing components in a tokamak with temperature variations
Paredes, A.
Bufferand, H.
Ciraolo, G.
Schwander, F.
Serre, E.
Ghendrih, P.
Tamain, P.
[J]. JOURNAL OF COMPUTATIONAL PHYSICS, 2014, 274 : 283 - 298
[30] A SUITABLE BOUNDARY-CONDITION FOR BOUNDED PLASMA SIMULATION WITHOUT SHEATH RESOLUTION
PARKER, SE
PROCASSINI, RJ
BIRDSALL, CK
COHEN, BI
[J]. JOURNAL OF COMPUTATIONAL PHYSICS, 1993, 104 (01) : 41 - 49

← 1 2 3 4 5 →