Figure 8
From: A simplified model to estimate nonlinear turbulent transport by linear dynamics in plasma turbulence
Comparison of the turbulent thermal diffusivities between the nonlinear gyrokinetic simulation results \(\bar{\chi }_{\textrm{i}}/\chi _{\textrm{i}}^{\textrm{GB}}\) and simplified transport model \(\chi _{\textrm{i}}^{\textrm{model}}/{\chi _{\textrm{i}}^{\textrm{GB}}}\). (a) The extended model in this study and (b) the conventional model in the earlier work30. The circle and triangle symbols correspond to the data for regression and extrapolation, respectively. (c) and (d) show the variances to the nonlinear gyrokinetic simulations.
