Hermes: global plasma edge fluid turbulence simulations

TY - JOUR

T1 - Hermes

T2 - Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas

AU - Dudson, Benjamin Daniel

AU - Leddy, Jarrod

N1 - © 2017 EUROfusion University of York. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2017/4/4

Y1 - 2017/4/4

N2 - The transport of heat and particles in the relatively collisionaledge regions of magnetically confined plasmas is a scientifically challenging andtechnologically important problem. Understanding and predicting this transportrequires 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.

AB - The transport of heat and particles in the relatively collisionaledge regions of magnetically confined plasmas is a scientifically challenging andtechnologically important problem. Understanding and predicting this transportrequires 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.

KW - numerical methods

KW - plasma turbulence

KW - tokamak edge

UR - http://www.scopus.com/inward/record.url?scp=85017459369&partnerID=8YFLogxK

U2 - 10.1088/1361-6587/aa63d2

DO - 10.1088/1361-6587/aa63d2

M3 - Article

SN - 0741-3335

VL - 59

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5

M1 - 054010

Y2 - 29 August 2016 through 3 September 2016

ER -