Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Hoelzl Matthias"'
Autor:
Lu, Zhixin, Meng, Guo, Sonnendrücker, Eric, Hatzky, Roman, Mishchenko, Alexey, Zonca, Fulvio, Lauber, Philipp, Hoelzl, Matthias
This paper presents a novel approach for simulating plasma instabilities in tokamak plasmas using the piecewise field-aligned finite element method in combination with the particle-in-cell method. Our method traditionally aligns the computational gri
Externí odkaz:
http://arxiv.org/abs/2410.23981
Autor:
Lu, Zhixin, Meng, Guo, Hatzky, Roman, Sonnendrücker, Eric, Mishchenko, Alexey, Chen, Jin, Lauber, Philipp, Zonca, Fulvio, Hoelzl, Matthias
The triangular mesh-based gyrokinetic scheme enables comprehensive axis-to-edge studies across the entire plasma volume. Our approach employs triangular finite elements with first-derivative continuity (C1), building on previous work to facilitate gy
Externí odkaz:
http://arxiv.org/abs/2410.03928
Autor:
Williams, Jeremy J., Bhole, Ashish, Kierans, Dylan, Hoelzl, Matthias, Holod, Ihor, Tang, Weikang, Tskhakaya, David, Costea, Stefan, Kos, Leon, Podolnik, Ales, Hromadka, Jakub, Team, JOREK, Laure, Erwin, Markidis, Stefano
Understanding plasma instabilities is essential for achieving sustainable fusion energy, with large-scale plasma simulations playing a crucial role in both the design and development of next-generation fusion energy devices and the modelling of indus
Externí odkaz:
http://arxiv.org/abs/2407.00394
Autor:
Cipolletta, Federico, Schwarz, Nina, Hoelzl, Matthias, Ventre, Salvatore, Isernia, Nicola, Rubinacci, Guglielmo, Soba, Alejandro, Mantsinen, Mervi Johanna, Team, the JOREK
JOREK is an advanced non-linear simulation code for studying MHD instabilities in magnetically confined fusion plasmas and their control and/or mitigation. A free-boundary and resistive wall extension was introduced via coupling to the STARWALL and C
Externí odkaz:
http://arxiv.org/abs/2404.16546
Edge localized modes (ELMs) are instabilities at the tokamak edge that can have short outbursts of highly energetic particles and heat, which can severely damage the walls of a plasma reactor. Resonant magnetic perturbations (RMPs) are used to mitiga
Externí odkaz:
http://arxiv.org/abs/2403.03226
Autor:
Ramasamy, Rohan, Aleynikova, Ksenia, Nikulsin, Nikita, Hindenlang, Florian, Holod, Ihor, Strumberger, Erika, Hoelzl, Matthias, team, the JOREK
An important question for the outlook of stellarator reactors is their robustness against pressure driven modes, and the underlying mechanism behind experimentally observed soft $\beta$ limits. Towards building a robust answer to these questions, sim
Externí odkaz:
http://arxiv.org/abs/2402.02881
One of the most well-established codes for modeling non-linear Magnetohydrodynamics (MHD) for tokamak reactors is JOREK, which solves these equations with a B\'ezier surface based finite element method. This code produces a highly sparse but also ver
Externí odkaz:
http://arxiv.org/abs/2308.16124
For magnetic confinement fusion in tokamak plasmas, some of the limitations to the particle and energy confinement times are caused by turbulence and collisions between particles in toroidal geometry, which determine the "anomalous" and the neoclassi
Externí odkaz:
http://arxiv.org/abs/2303.00415
Autor:
Ramasamy, Rohan, Hoelzl, Matthias, Henneberg, Sophia, Strumberger, Erika, Lackner, Karl, Günter, Sibylle
The equilibrium code, VMEC, is used to study external kinks in low $\beta$ tokamaks and $l=2$ stellarators. The applicability of the code when modelling nonlinear MHD effects is explored in an attempt to understand and predict how the initial saturat
Externí odkaz:
http://arxiv.org/abs/2302.13291
Autor:
Meier, Lorenz, Hoelzl, Matthias, Cathey, Andres, Huijsmans, Guido, Viezzer, Eleonora, Dunne, Mike, van Dijk, Jan, Zabala, Diego José Cruz, Lackner, Karl, Günter, Sibylle, Team, ASDEX Upgrade, Team, EUROfusion MST1, Team, JOREK
Publikováno v:
Nuclear Fusion 63, 086026 (2023)
Periodic edge localized modes (ELMs) are the non-linear consequences of pressure-gradient-driven ballooning modes and current-driven peeling modes becoming unstable in the pedestal region of high confinement fusion plasmas. In future tokamaks like IT
Externí odkaz:
http://arxiv.org/abs/2301.07607