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arXiv · 1908.00397

Global scaling of the heat transport in fusion plasmas

Sara Moradi·Johan Anderson·Michele Romanelli·Hyun-Tae Kim·JET contributors
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Abstract

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, $\alpha$, is defined through the power balance analysis of the steady state. The model was used to obtain the experimental values of $\alpha$ for a large database of the JET Carbon-wall as well as ITER Like-wall plasmas. The findings show that the average fractional degree of the heat flux over the database for electrons is $\alpha \sim 0.8$, suggesting a global scaling between the net heating and the pressure profile in the JET plasmas. The model is expected to provide an accurate and a simple description of heat transport that can be used in transport studies of fusion plasmas.

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Sara Moradi, Johan Anderson, Michele Romanelli, Hyun-Tae Kim, JET contributors. 2019-08-01. Global scaling of the heat transport in fusion plasmas. https://doi.org/10.1103/physrevresearch.2.013027

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