000006728 001__ 6728
000006728 005__ 20240201132201.0
000006728 037__ $$aPOSTER-2024-0024
000006728 100__ $$aSenthamizh Pavai, V
000006728 245__ $$aSolar wind modelling at near-Sun distances using the COCONUT coronal model and the EUHFORIA heliospheric model
000006728 260__ $$c2023
000006728 269__ $$c2023-11-20
000006728 520__ $$aThe results of our recent solar wind modelling study with the 3D MHD model EUHFORIA (EUropean Heliospheric FORecasting Information Asset, Pomoell & Poedts, 2018) at near the Sun distances show a large discrepancy between modelling results and in situ observations by Parker Solar Probe (PSP). One possible reason for this modelling inaccuracy is the simple coronal model of EUHFORIA. The default coronal model of EUHFORIA uses the potential field source surface, Schatten current sheet model and Wang-Sheeley-Arge (WSA, Arge et al., 2003) description of the solar wind to provide the plasma and magnetic conditions at the inner boundary (0.1 AU) of EUHFORIA.  In this work, we employ the alternative recently developed coronal model COCONUT (The COolfluid COroNa UnsTructured, Perri et al., 2022). This global coronal model relies on ideal-MHD and it has already provided some promising first modelling results (Kuźma et al. 2023). We then compare the solar wind modelling results from this set-up with the standard EUHFORIA coronal+heliospheric model setup, by evaluating their agreement with the in situ observations from PSP for its first ten close encounters.
000006728 536__ $$aGrant B2/$$c191/$$fP1/SWiM from BRAIN.be
000006728 594__ $$aNO
000006728 6531_ $$asolar wind modeling, EUHFORIA, PSP, COCONUT coronal model
000006728 700__ $$aMagdalenic1, J
000006728 700__ $$aNiemela1, A
000006728 700__ $$aLinan, L
000006728 773__ $$tEuropean Space Weather Week, Toulouse, France
000006728 8560_ $$fpavai.valliappan@ksb-orb.be
000006728 980__ $$aCPOSTER