Distribution of BL quantities along radius. The data are from the model with M_WD = M_⊙  and ω_WD = 0.8 ω_K. The position of the WD surface at R_WD = 5.48 × 10⁸ cm is shown by the vertical dotted line. Top panel: shown is the effective temperature (solid curve) together with the relative angular velocity (dashed curve), as obtained from the 1D hydrodynamical model. These are the same for the atmosphere models. Middle and bottom panels: Rosseland optical half-thickness, τ₀, and geometrical half-thickness, H₀, for the model-atmosphere models (solid lines). The distributions obtained from the 1D hydrodynamical model (dotted curves) and the gray model (dashed curves) are also shown.