Electromagnetic model for finite element analyses of plasma disruption events used in the design phase of the COMPASS-U tokamak

0542796 - ÚFP 2022 RIV CH eng J - Journal Article
Hromádka, Jakub - Havlíček, Josef - Patel, Nisarg - Yanovskiy, Vadim - Patočka, Karel - Převrátil, Jan - Imríšek, Martin - Jaulmes, Fabien - Brooks, A. - Titus, J. H. - Balner, Vojtěch - Šesták, David - Pánek, Radomír
Electromagnetic model for finite element analyses of plasma disruption events used in the design phase of the COMPASS-U tokamak.
Fusion Engineering and Design. Roč. 167, June (2021), č. článku 112369. ISSN 0920-3796. E-ISSN 1873-7196
Institutional support: RVO:61389021
Keywords : ansys * compass-u * Current quench * Electromagnetic model * Finite element analysis * Halo current * Passive stabilizing plates * Plasma disruptions * Thermal quench * Vacuum vessel * Vertical displacement event
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.905, year: 2021
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0920379621001459?via%3Dihub

Large electromagnetic forces acting on the vacuum vessel and passive stabilizing plates of the COMPASS-U tokamak (R = 0.894 m, a = 0.27 m, B ≤ 5 T, I ≤ 2 MA) due to disruption events are expected during its operation. An electromagnetic model based on the finite element method was developed using ANSYS software to determine the maximal possible forces on the vacuum vessel assembly that might occur. The effects of current quench, thermal quench, vertical displacement events and halo currents are all incorporated in the model. The toroidal eddy currents, the poloidal eddy currents (caused by thermal and current quench) and the poloidal halo current are taken into account. The model predicts that the induced toroidal current can reach the value up to 1.33 MA in the vacuum vessel shell and the value up to 0.52 MA in the passive stabilizing plates. Vertical force up to 4.1 MN acting on the entire vacuum vessel assembly can be expected and force up to 2 MN acting on the stabilizing plates, in particular. The results of the presented electromagnetic model are part of the load specification for the mechanical design of the vacuum vessel assembly of the COMPASS-U tokamak. T P
Permanent Link: http://hdl.handle.net/11104/0320141