Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario

Līga Avotiņa; Larisa Baumane; Mihails Haļitovs; Juris Jansons; Gunta Ķizāne; Andris Leščinskis; Broņislavs Leščinskis; Elīna Pajuste; Aigars Vītiņš; Artūrs Zariņš; Citrin J.; JET Contributors

doi:10.1088/1741-4326/ac7535

Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario

Līga Avotiņa
, Larisa Baumane
, Mihails Haļitovs
, Juris Jansons
, Gunta Ķizāne
, Andris Leščinskis
, Broņislavs Leščinskis
, Elīna Pajuste
, Aigars Vītiņš
, Artūrs Zariņš
, Citrin J.
, JET Contributors

Zinātniskās darbības rezultāts: Devums žurnālam › Zinātniskais raksts (žurnālā) › koleģiāli recenzēts

23 Atsauces (Scopus)

Kopsavilkums

Previous studies with first-principle-based integrated modelling suggested that electron temperature gradient (ETG) turbulence may lead to an anti-gyroBohm isotope scaling in JET high-performance hybrid H-mode scenarios. A dedicated comparison study against higher-fidelity turbulence modelling invalidates this claim. Ion-scale turbulence with magnetic field perturbations included, can match the power balance fluxes within temperature gradient error margins. Multiscale gyrokinetic simulations from two distinct codes produce no significant ETG heat flux, demonstrating that simple rules-of-thumb are insufficient criteria for its onset.

Oriģinālvaloda	Angļu
Raksta numurs	086025
Žurnāls	Nuclear Fusion
Sējums	62
Izdevuma numurs	8
DOIs	https://doi.org/10.1088/1741-4326/ac7535
Publikācijas statuss	Publicēts - aug. 2022

OECD Zinātnes nozare

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Avotiņa, L., Baumane, L., Haļitovs, M., Jansons, J., Ķizāne, G., Leščinskis, A., Leščinskis, B., Pajuste, E., Vītiņš, A., Zariņš, A., J., C., & Contributors, JET. (2022). Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario. Nuclear Fusion, 62(8), Zinātniskais raksts 086025. https://doi.org/10.1088/1741-4326/ac7535

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title = "Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario",

abstract = "Previous studies with first-principle-based integrated modelling suggested that electron temperature gradient (ETG) turbulence may lead to an anti-gyroBohm isotope scaling in JET high-performance hybrid H-mode scenarios. A dedicated comparison study against higher-fidelity turbulence modelling invalidates this claim. Ion-scale turbulence with magnetic field perturbations included, can match the power balance fluxes within temperature gradient error margins. Multiscale gyrokinetic simulations from two distinct codes produce no significant ETG heat flux, demonstrating that simple rules-of-thumb are insufficient criteria for its onset.",

keywords = "gyrokinetics, integrated modelling, multiscale turbulence, reduced order modelling, tokamak",

author = "Līga Avotiņa and Larisa Baumane and Mihails Haļitovs and Juris Jansons and Gunta Ķizāne and Andris Le{\v s}{\v c}inskis and Broņislavs Le{\v s}{\v c}inskis and Elīna Pajuste and Aigars Vītiņ{\v s} and Artūrs Zariņ{\v s} and Citrin J. and JET Contributors",

note = "Publisher Copyright: {\textcopyright} 2022 IAEA, Vienna.",

year = "2022",

month = aug,

doi = "10.1088/1741-4326/ac7535",

language = "English",

volume = "62",

journal = "Nuclear Fusion",

issn = "0029-5515",

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T1 - Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario

AU - Avotiņa, Līga

AU - Baumane, Larisa

AU - Haļitovs, Mihails

AU - Jansons, Juris

AU - Ķizāne, Gunta

AU - Leščinskis, Andris

AU - Leščinskis, Broņislavs

AU - Pajuste, Elīna

AU - Vītiņš, Aigars

AU - Zariņš, Artūrs

AU - J., Citrin

AU - Contributors, JET

PY - 2022/8

Y1 - 2022/8

N2 - Previous studies with first-principle-based integrated modelling suggested that electron temperature gradient (ETG) turbulence may lead to an anti-gyroBohm isotope scaling in JET high-performance hybrid H-mode scenarios. A dedicated comparison study against higher-fidelity turbulence modelling invalidates this claim. Ion-scale turbulence with magnetic field perturbations included, can match the power balance fluxes within temperature gradient error margins. Multiscale gyrokinetic simulations from two distinct codes produce no significant ETG heat flux, demonstrating that simple rules-of-thumb are insufficient criteria for its onset.

AB - Previous studies with first-principle-based integrated modelling suggested that electron temperature gradient (ETG) turbulence may lead to an anti-gyroBohm isotope scaling in JET high-performance hybrid H-mode scenarios. A dedicated comparison study against higher-fidelity turbulence modelling invalidates this claim. Ion-scale turbulence with magnetic field perturbations included, can match the power balance fluxes within temperature gradient error margins. Multiscale gyrokinetic simulations from two distinct codes produce no significant ETG heat flux, demonstrating that simple rules-of-thumb are insufficient criteria for its onset.

KW - gyrokinetics

KW - integrated modelling

KW - multiscale turbulence

KW - reduced order modelling

KW - tokamak

UR - https://iopscience.iop.org/article/10.1088/1741-4326/ac7535

UR - https://www.scopus.com/pages/publications/85133466810

U2 - 10.1088/1741-4326/ac7535

DO - 10.1088/1741-4326/ac7535

M3 - Article

SN - 0029-5515

VL - 62

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 8

M1 - 086025

ER -

Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario

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