Hermes: Global plasma edge fluid turbulence simulations

Abstract

The transport of heat and particles in the relatively collisional edge regions of magnetically confined plasmas is a scientifically challenging and technologically important problem. Understanding and predicting this transport requires the self-consistent evolution of plasma fluctuations, global profiles and flows, but the numerical tools capable of doing this in realistic (diverted) geometry are only now being developed. Here a 5-field reduced 2-fluid plasma model for the study of instabilities and turbulence in magnetised plasmas is presented, built on the BOUT++ framework. This cold ion model allows the evolution of global profiles, electric fields and flows on transport timescales, with flux-driven cross-field transport determined self-consistently by electromagnetic turbulence. Developments in the model formulation and numerical implementation are described, and simulations are performed in poloidally limited and diverted tokamak configurations.

Joint Varenna-Lausanne international workshop on Theory of Fusion Plasmas

References in corpus (4)

• BOUT++: Recent and current developments
• Verification of BOUT++ by the Method of Manufactured Solutions
• The effects of shape and amplitude on the velocity of scrape-off layer filaments
• Plasma Turbulence in the Scrape-off Layer of the ISTTOK Tokamak

Cited by in corpus (15)

• Global turbulence simulations of the tokamak edge region with GRILLIX
• Validation of edge turbulence codes against the TCV-X21 diverted L-mode reference case
• Gyrokinetic continuum simulation of turbulence in a straight open-field-line plasma
• Drift reduced Landau fluid model for magnetized plasma turbulence simulations in BOUT++ framework
• Full-$f$ gyrokinetic simulation of turbulence in a helical open-field-line plasma
• Numerical turbulence simulations of intermittent fluctuations in the scrape-off layer of magnetized plasmas
• A self-consistent multi-component model of plasma turbulence and kinetic neutral dynamics for the simulation of the tokamak boundary
• Fluid & Gyrokinetic turbulence in open field-line, helical plasmas
• Gyrokinetic Continuum Simulation of Turbulence in Open-Field-Line Plasmas
• Modelling of power exhaust in TCV positive and negative triangularity L-mode plasmas
• Comparison of edge turbulence characteristics between DIII-D and C-Mod simulations with XGC1
• The effects of non-uniform drive on plasma filaments
• Comparing Two- and Three-Dimensional Models of Scrape-Off-Layer Turbulent Transport
• Intrinsic suppression of turbulence in linear plasma devices
• The deteriorating effect of plasma density fluctuations on microwave beam quality