Equatorial planes in the 3D dynamic heliosphere simulations with the modelled cone (left) and spheromak (right) CMEs. The radial velocity and velocity divergence are plotted in the background. The divergence of velocity is saturated to show compression regions in dark red. Outside these compression regions, the colour function of the velocity divergence is faded so that the radial velocity is shown. The contour of the CME tracing function, TRF, is overplotted. The snapshot corresponds to the observed arrival time of the shock at Solar Orbiter. The location of Solar Orbiter is indicated by ‘S’.