Edge turbulence in ISTTOK: a multi-code fluid validation

TY - JOUR

T1 - Edge turbulence in ISTTOK

T2 - a multi-code fluid validation

AU - Dudson, Benjamin Daniel

AU - Gracias, W A

AU - Jorge, Rogerio

AU - Nielsen, A.H.

AU - Olsen, M B

AU - Ricci, Paolo

AU - Silva, Carlos

AU - Tamain, P.

AU - Ciraolo, G.

AU - Fedorczak, N.

AU - Galassi, Davide

AU - Madsen, Jens

AU - Militello, Fulvio

AU - Nace, N

AU - Rasmussen, J J

AU - Riva, Fabio

AU - Serre, Eric

N1 - This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

PY - 2021/4/8

Y1 - 2021/4/8

N2 - Fluid models used to study the edge plasma region need to be benchmarked against similar conditions given that models can strongly differ in complexity and therefore the results they produce. Via this validation study undertaken through the framework of EUROfusion Enabling Research, four state-of-the art models - GBS, Hermes/BOUT++, HESEL and TOKAM3X - are compared to experimental plasma turbulence measurements on the ISTTOK tokamak. Statistical comparisons of simulation and experiment data show that fluid models used here can replicate most of the experiment in terms of $I_{sat}$ and $V_{float}$ fluctuations. Furthermore, it is shown that without including more complex information (like core turbulence information and domain geometry details and magnetic topological aspects) in fluid models, the results recovered can fall short from the experimental results. Via the simulations using these codes, it is demonstrated that fluid models continue to be a good cost-effective tool in recovering many global aspects of edge plasma behaviour.

AB - Fluid models used to study the edge plasma region need to be benchmarked against similar conditions given that models can strongly differ in complexity and therefore the results they produce. Via this validation study undertaken through the framework of EUROfusion Enabling Research, four state-of-the art models - GBS, Hermes/BOUT++, HESEL and TOKAM3X - are compared to experimental plasma turbulence measurements on the ISTTOK tokamak. Statistical comparisons of simulation and experiment data show that fluid models used here can replicate most of the experiment in terms of $I_{sat}$ and $V_{float}$ fluctuations. Furthermore, it is shown that without including more complex information (like core turbulence information and domain geometry details and magnetic topological aspects) in fluid models, the results recovered can fall short from the experimental results. Via the simulations using these codes, it is demonstrated that fluid models continue to be a good cost-effective tool in recovering many global aspects of edge plasma behaviour.

U2 - 10.1088/1361-6587/abe21d

DO - 10.1088/1361-6587/abe21d

M3 - Article

SN - 0741-3335

VL - 63

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

M1 - 055013

ER -