Radial structure of snapshot of set-up L3.85T24 for the inner modelled region. A PC model using the gas opacities of Aringer is shown (in orange). The three panels show: (a) gas velocity u_g, sound speed c_s; (b) gas density ρ_g, dust density 10⁴ × ρ_d (log); and (c) gas temperature T_g, radiative temperature T_r, and dust temperature T_d. All properties are drawn vs the stellar radius R_* (lower axis) and astronomical units (AU; upper axis). The grey horizontal lines are guides.