Comparison between the solar wind model generated with NIRwave (black lines) and a polytropic model using NIRVANA (green lines). The panels show the radial wind velocity (v_r, top panel), number density (n_p, middle panel), and temperature (T, bottom panel), each with respect to radial distance in R_⊙ from the domain centre. The solid lines represent equatorial radial parameter profiles associated with the slow wind regime, and dashed lines represent polar radial parameter profiles associated with the fast wind. The grey dotted lines in each panel represent the observational data from PSP described in Sect. 3.