Comparison of the central disk temperature computed using our code (black solid line) with the analytical solutions, obtained for ṁ = 1, α_v = 0.1 and r_in = 2. The three domains are shown as a background color: green (P_rad, τ_tot = τ_T), blue (P_gas, τ_tot = τ_T), and red (P_gas, τ_tot = τ_ff). The analytical temperature profiles computed for each zone (symbols) are superimposed on the whole domain using the same color. The vertical dashed lines mark the transition radii between the zones.