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DTSTAMP:20260624T171342Z
LOCATION:Bldg. 6 - 003
DTSTART;TZID=Europe/Stockholm:20260630T151500
DTEND;TZID=Europe/Stockholm:20260630T154500
UID:submissions.pasc-conference.org_PASC26_sess142_msa149@linklings.com
SUMMARY:Recent Advances in Electromagnetic and Non-Axisymmetric Turbulent 
 Transport Simulations for Magnetic Confinement Fusion Plasmas
DESCRIPTION:Michael Barnes (University of Oxford); Georgia Acton (Max Plan
 ck Institute for Plasma Physics); and Yujia Zhang (United Kingdom Atomic E
 nergy Authority, University of Oxford)\n\nDirect numerical simulation of t
 urbulence in magnetic confinement fusion plasmas is challenging due to the
  presence of a diverse set of physical phenomena, spanning a wide range of
  space and time scales.  This is particularly evident for the reactor-rele
 vant plasmas that are an increasing focus of the theory and modelling comm
 unity.  For example, high plasma pressure introduces novel electromagnetic
  turbulence effects; high plasma density increases the importance of ‘spon
 taneous’ rotation; and the desire for steady-state operation motivates the
  pursuit of a three-dimensional confining field geometry with low turbulen
 t transport.  In this talk I will give an overview of recent efforts to de
 sign and employ numerical simulations effectively using the gyrokinetic co
 de stella to address some of these topics.  The focus will be on the prude
 nt use of implicit methods and theory-guided simulation to produce predict
 ions for turbulence-driven fluxes at minimal computational cost.  Examples
  will include the development of an adjoint method for flux surface shape 
 optimisation, an iterative implicit method for simulating a full flux annu
 lus and the marriage of theory and numerically derived scaling laws to pro
 vide fast predictions for high-transport thresholds in electromagnetic tur
 bulence.\n\nDomain: Physics, Computational Methods and Applied Mathematics
 \n\nSession Chair: Eric Sonnendrücker (Max Planck Institute for Plasma Phy
 sics, Technical University of Munich)\n\n
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