TY - JOUR
T1 - Development of Finite Element Field Solver in Gyrokinetic Toroidal Code
JO - Communications in Computational Physics
VL - 3
SP - 655
EP - 671
PY - 2018
DA - 2018/05
SN - 24
DO - http://doi.org/10.4208/cicp.OA-2017-0139
UR - https://global-sci.org/intro/article_detail/cicp/12275.html
KW - Finite element method, finite difference method, Poisson equation, GTC.
AB - <p style="text-align: justify;">A new finite element (FE) field solver has been implemented in the gyrokinetic
toroidal code (GTC) in attempt to extend the simulation domain to magnetic axis
and beyond the last closed flux surface, which will enhance the capability the GTC
code since the original finite difference (FD) solver will lose its capability in such circumstances.
A method of manufactured solution is employed in the unit fidelity test
for the new FE field solver, which is then further verified through integrated tests with
three typical physical cases for the comparison between the new FE field solver and
the original finite difference field solver. The results by the newly implemented FE
field solver are in great accord with the original solver.</p>