@article{2afc6cd50048418ca6d4cb3ac819e0b3,
title = "Spatial core-edge coupling of the particle-in-cell gyrokinetic codes GEM and XGC",
abstract = "Two existing particle-in-cell gyrokinetic codes, GEM for the core region and XGC for the edge region, have been successfully coupled with a spatial coupling scheme at the interface in a toroidal geometry. A mapping technique is developed for transferring data between GEM's structured and XGC's unstructured meshes. Two examples of coupled simulations are presented to demonstrate the coupling scheme. The optimization of GEM for graphics processing unit is also presented.",
author = "Junyi Cheng and Julien Dominski and Yang Chen and Haotian Chen and Gabriele Merlo and Ku, {Seung Hoe} and Robert Hager and Chang, {Choong Seock} and Eric Suchyta and Eduardo D'Azevedo and Stephane Ethier and Sarat Sreepathi and Scott Klasky and Frank Jenko and Amitava Bhattacharjee and Scott Parker",
note = "Funding Information: This research used resources of the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory (ORNL) and resources of the National Energy Research Scientific Computing Center (NERSC), which are supported by the Office of Science of the U.S. Department of Energy under Contract Nos. DE-AC05–00OR22725 and DE-AC02–05CH11231, respectively. Funding Information: This research was supported by the Exascale Computing Project (No. 17-SC-20-SC), a collaborative effort of the U.S. Department of Energy Office of Science and the National Nuclear Security Administration. Publisher Copyright: {\textcopyright} 2020 Author(s).",
year = "2020",
month = dec,
day = "1",
doi = "10.1063/5.0026043",
language = "English (US)",
volume = "27",
journal = "Physics of Plasmas",
issn = "1070-664X",
publisher = "American Institute of Physics Publising LLC",
number = "12",
}