Automatic UEDGE simulations of a large series of time-slices for tokamak discharges

One challenge of transport edge fluid codes is to extend their computational capability for fast and automatic convergences to be used for analysis of transport on the open field lines. One of the main issues is the missing standardization of an automatic grid generation without requiring manual modifications by the users. Thanks to the development of the grid generator Gingred [1], the automatic generation of UEDGE grids becomes accessible using only the magnetic equilibrium from CAKE [2] at every few ms. With the previous optimization of UEDGE [3], it is now possible to automatically converge a multi-fluid physics model for arbitrary single null shapes. The UEDGE physics model includes deuterium plasma and with DIII-D like transport coefficient profiles. Power and particle fluxes at the core interface are matched accordingly to diagnostics. Time evolutions of the detachment behavior and particles and heat fluxes computed from UEDGE are analyzed via the OMFIT [4] framework for DIII-D experiments and the differences before and after ELMs on the detachment tendencies are shown.
[1] O. Izacard & M. Umansky, arXiv:1705.05717 (2017)
[2] D. Eldon et al., Unpublished (2017)
[3] O. Izacard et al., APS-DPP NP10.31 (2016)
[4] O. Meneghini et al., Nucl. Fus. 55, 083008 (2015)