Artículo
Global scaling of the heat transport in fusion plasmas
Autor/es | Moradi, Sara
Anderson, Johan Romanelli, Michele Kim, Hyun Tae Jet Contributors Viezzer, Eleonora ![]() ![]() ![]() ![]() ![]() ![]() ![]() García Muñoz, Manuel ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2020 |
Fecha de depósito | 2023-11-10 |
Publicado en |
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Resumen | A global heat flux model based on a fractional derivative of plasma pressure is proposed for the heat transport
in fusion plasmas. The degree of the fractional derivative of the heat flux, α, is defined through the power ... A global heat flux model based on a fractional derivative of plasma pressure is proposed for the heat transport in fusion plasmas. The degree of the fractional derivative of the heat flux, α, is defined through the power balance analysis of the steady state. The model was used to obtain the experimental values of α for a large database of the Joint European Torus (JET) carbon-wall as well as ITER like-wall plasmas. The fractional degrees of the electron heat flux are found to be α < 2, for all the selected pulses in the database, suggesting a deviation from the diffusive paradigm. Moreover, the results show that as the volume integrated input power is increased, the fractional degree of the electron heat flux converges to α ∼ 0.8, indicating a global scaling between the net heating and the pressure profile in the high-power JET plasmas. The model is expected to provide insight into the proper kinetic description for the fusion plasmas and improve the accuracy of the heat transport predictions. |
Agencias financiadoras | EURATOM - 2014-2018 - 633053 |
Identificador del proyecto | 633053
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Cita | Moradi, S., Anderson, J., Romanelli, M., Kim, H.T., Jet Contributors, , Viezzer, E. y García Muñoz, M. (2020). Global scaling of the heat transport in fusion plasmas. Physical Review Research, 2 (1), 013027. https://doi.org/10.1103/PhysRevResearch.2.013027. |
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PhysRevResearch.2.013027.pdf | 867.3Kb | ![]() | Ver/ | |