Evolution of properties of two models for HD 318101, with M_* = 4.7 (red) and 5.0 ﹩\;{M}_{\odot }﹩ (blue). The initial metallicity is Z₀ = 0.02. Surface layers are homogenized down to the bottom of the He II convection zone. Extra turbulence T150KD1K-3 is added (see the text), covering mostly the interior of the Mn–Fe–Ni convection zone; the red curves correspond to the T150K model of Figure 15. ΔM_cz is the mass measured from the star surface. Panels for chemical elements show mass fraction changes log₁₀(X/X₀)_element at the surface.