Clearing the road for high-fidelity fast ion simulations in full three dimensions

Tutkimustuotos: Lehtiartikkeli

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Bibtex - Lataa

@article{50d225d393884a0bb518f52ac2b3088c,
title = "Clearing the road for high-fidelity fast ion simulations in full three dimensions",
abstract = "High-energy ions, such as fusion alphas and ions from external heating, can be very sensitive to any non-axisymmetric features in the confining magnetic field due to their collisionless nature. Since understanding the confinement properties of these ions is crucial for ITER (the first fusion reactor currently under construction in Cadarache, France) and beyond, it is of ultimate importance that the predictive simulations are accurate and free of numerical distortions. Adding the third dimension comes at substantial computational cost, calling for new kinds of approaches and computational platforms. In this contribution we discuss what new features, even new physics, the non-axisymmetry brings with it and how one could cope with the ever-increasing demands on both memory and CPU resources. In the end, a few simulation examples with a varying level of non-axisymmetry are given.",
keywords = "fusion plasma, GUIDING-CENTER, MAGNETIC-FIELD, RIPPLE",
author = "T. Kurki-Suonio and K. Sarkimaki and J. Varje and S. Aekaeslompolo and J. Kontula and P. Ollus and M. Becoulet and L. Chone and Y. Liu and P. Vincenzi",
year = "2018",
month = "12",
doi = "10.1017/S0022377818000946",
language = "English",
volume = "84",
journal = "Journal of Plasma Physics",
issn = "0022-3778",
publisher = "Cambridge University Press",
number = "6",

}

RIS - Lataa

TY - JOUR

T1 - Clearing the road for high-fidelity fast ion simulations in full three dimensions

AU - Kurki-Suonio, T.

AU - Sarkimaki, K.

AU - Varje, J.

AU - Aekaeslompolo, S.

AU - Kontula, J.

AU - Ollus, P.

AU - Becoulet, M.

AU - Chone, L.

AU - Liu, Y.

AU - Vincenzi, P.

PY - 2018/12

Y1 - 2018/12

N2 - High-energy ions, such as fusion alphas and ions from external heating, can be very sensitive to any non-axisymmetric features in the confining magnetic field due to their collisionless nature. Since understanding the confinement properties of these ions is crucial for ITER (the first fusion reactor currently under construction in Cadarache, France) and beyond, it is of ultimate importance that the predictive simulations are accurate and free of numerical distortions. Adding the third dimension comes at substantial computational cost, calling for new kinds of approaches and computational platforms. In this contribution we discuss what new features, even new physics, the non-axisymmetry brings with it and how one could cope with the ever-increasing demands on both memory and CPU resources. In the end, a few simulation examples with a varying level of non-axisymmetry are given.

AB - High-energy ions, such as fusion alphas and ions from external heating, can be very sensitive to any non-axisymmetric features in the confining magnetic field due to their collisionless nature. Since understanding the confinement properties of these ions is crucial for ITER (the first fusion reactor currently under construction in Cadarache, France) and beyond, it is of ultimate importance that the predictive simulations are accurate and free of numerical distortions. Adding the third dimension comes at substantial computational cost, calling for new kinds of approaches and computational platforms. In this contribution we discuss what new features, even new physics, the non-axisymmetry brings with it and how one could cope with the ever-increasing demands on both memory and CPU resources. In the end, a few simulation examples with a varying level of non-axisymmetry are given.

KW - fusion plasma

KW - GUIDING-CENTER

KW - MAGNETIC-FIELD

KW - RIPPLE

U2 - 10.1017/S0022377818000946

DO - 10.1017/S0022377818000946

M3 - Article

VL - 84

JO - Journal of Plasma Physics

JF - Journal of Plasma Physics

SN - 0022-3778

IS - 6

M1 - 745840603

ER -

ID: 31497506