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Fig. 17

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Entropy profiles as a function of optical depth. The dashed line indicates the value of the asymptotically reached entropy in the 3D model. Thick solid line is entropy stratification of the temporally and spatially averaged ⟨3D⟩ model, thin lines are 1D LHD models calculated with different mixing-length parameters, αMLT = 1.0,1.5,2.0 (left-to-right). The two models with non-zero turbulent pressure are shown by dashed (αMLT = 2.0 and f = 1.0) and dash-dotted (αMLT = 2.0 and f = 2.0) lines.

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