Journal
NUCLEAR FUSION
Volume 61, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1741-4326/abb918
Keywords
tokamak; integrated; modeling; OMFIT; OMAS; GACODE
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Funding
- U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences [DE-SC0017992, DE-FG02-95ER54309, DE-FC02-06ER54873, DE-FC02-04ER54698]
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
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An integrated modeling workflow has been developed and successfully tested, capable of finding a self-consistent plasma solution. Key features include the ability to account for impurity transport in the plasma self-consistently and the use of machine learning and a new numerical library to accelerate the models.
An integrated modeling workflow capable of finding the steady-state plasma solution with self-consistent core transport, pedestal structure, current profile, and plasma equilibrium physics has been developed and tested against a DIII-D discharge. Key features of the achieved core-pedestal coupled workflow are its ability to account for the transport of impurities in the plasma self-consistently, as well as its use of machine learning accelerated models for the pedestal structure and for the turbulent transport physics. Notably, the coupled workflow is implemented within the One Modeling Framework for Integrated Tasks (OMFIT) framework, and makes use of the ITER integrated modeling and analysis suite data structure for exchanging data among the physics codes that are involved in the simulations. Such technical advance has been facilitated by the development of a new numerical library named ordered multidimensional arrays structure.
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