First principle integrated modeling of multi-channel transport including Tungsten in JET
Author | |
Abstract |
For the first time, over five confinement times, the self-consistent flux driven time evolution of heat, momentum transport and particle fluxes of electrons and multiple ions including Tungsten (W) is modeled within the integrated modeling platform JETTO [Romanelli M et al PFR 2014], using first principle-based codes: namely, QuaLiKiz [Bourdelle C. et al. PPCF 2016] for turbulent transport and NEO [Belli E A and Candy J PPCF 2008] for neoclassical transport. For a JET-ILW pulse, the evolution of measured temperatures, rotation and density profiles are successfully predicted and the observed W central core accumulation is obtained. The poloidal asymmetries of the W density modfying its neoclassical and turbulent transport are accounted for. Actuators of the W core accumulation are studied: removing the central particle source annihilates the central W accumulation whereas the suppression of the torque reduces significantly the W central accumulation. Finally, the presence of W slightly reduces main ion heat turbulent transport through complex nonlinear interplays involving radiation, effective charge impact on ITG and collisionality. |
Year of Publication |
2018
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Journal |
Nuclear Fusion
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Volume |
58
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Issue |
9
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Number of Pages |
096003
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DOI |
10.1088/1741-4326/aac780
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PId |
8b217fe93b83353631a28ae3b1981d0a
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Alternate Journal |
Nucl. Fusion
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Label |
OA
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Attachment | |
Journal Article
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