  The Super-X Divertor (SXD) is an alternative divertor configuration
leveraging total flux expansion at the Outer Strike Point (OSP). While the
extended 2-Point Model (2PM) predicts facilitated detachment access and control
in the SXD configuration, these attractive features are not always retrieved
experimentally. These discrepancies are at least partially explained by the
effect of parallel flows which, when self-consistently included in the 2PM,
reveal the role of total flux expansion on the pressure balance and weaken the
total flux expansion effect on detachment access and control, compared to the
original predictions. This new model can partially explain the discrepancies
between the 2PM and experiments performed on tokamak \`a configuration variable
(TCV), in ohmic L-mode scenarios, which are particularly apparent when scanning
the OSP major radius Rt. In core density ramps in lower Single-Null (SN)
configuration, the impact of Rt on the CIII emission front movement in the
divertor outer leg - used as a proxy for the plasma temperature in the divertor
- is substantially weaker than 2PM predictions. Furthermore, in OSP radial
sweeps in lower and upper SN configurations, in ohmic L-mode scenarios with a
constant core density, the peak parallel particle flux density at the OSP is
almost independent of Rt, while the 2PM predicts a linear dependence. Finally,
analytical and numerical modeling of parallel flows in the divertor is
presented. It is shown that an increase in total flux expansion can favour
supersonic flows at the OSP. Parallel flows are also shown to be relevant by
analysing SOLPS-ITER simulations of TCV.
