Wind velocity profile mimicking pulsation-induced shocks just above the stellar atmosphere. The orange curve shows a beta velocity wind profile for β​ = ​5 and v₀​ = ​1 km s⁻¹. The blue curve in the left panel is constructed by: (i) using the shock velocity modelled by Bladh et al. (2019, see their Fig. 1) up to ∼10 R_⋆ followed by; (ii) a beta velocity profile that is fitted through the velocity points beyond ∼8 R_⋆, with β​ = ​5 and the fit parameter v₀ which produces a smooth transition from the pulsation-dominated region towards the freely expanding wind region. In the right panel, the blue curve is constructed in a similar way as in the left panel, but this time the shock velocities modelled by Bladh et al. (2019) are multiplied by a factor of 3.