This content will become publicly available on Wed Jul 31 00:00:00 EDT 2024
Elevating zero dimensional global scaling predictions to self-consistent theory-based simulations
Abstract
In this work, we have developed an innovative workflow, Stability, Transport, Equilibrium, and Pedestal (STEP)-zero-dimensional (0D), within the OMFIT integrated modeling framework. Through systematic validation against the International Tokamak Physics Activity global H-mode confinement database, we demonstrated that STEP-0D, on average, predicts the energy confinement time with a mean relative error of less than 19%. Moreover, this workflow showed promising potential in predicting plasmas for proposed fusion reactors such as the affordable, robust, compact (ARC) reactor, the European demonstration power plant (EU-DEMO), and the China fusion engineering test reactor (CFETR) indicating moderate H-factors between 0.9 and 1.2. STEP-0D allows theory-based prediction of tokamak scenarios, beginning with 0D quantities. The workflow initiates with the PRO-create module, generating physically consistent plasma profiles and equilibrium using the same 0D quantities as the IPB98(y,2) confinement scaling. This sets the starting point for the STEP module, which further iterates between theory-based physics models of equilibrium, core transport, and pedestal to yield a self-consistent solution. Given these attributes, STEP-0D not only improves the accuracy of predicting plasma performance but also provides a path toward a novel fusion power plant design workflow. When integrated with engineering and costing models within an optimization, this new approach could eliminatemore »
- Authors:
-
[1];
[2];
[2];
[2];
[2];
[2];
[2];
[2]
- Oak Ridge Associated Universities (ORAU), Oak Ridge, TN (United States)
- General Atomics, San Diego, CA (United States)
- Publication Date:
- Research Org.:
- General Atomics, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Science (FES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- OSTI Identifier:
- 1994988
- Grant/Contract Number:
- SC0017992; FC02-04ER54698; FG02-95ER54309
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 30; Journal Issue: 7; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; plasma confinement; plasma heating; Tokamaks; magnetic confinement fusion; regression analysis
Citation Formats
Slendebroek, Tim, McClenaghan, Joseph, Meneghini, Orso M., Lyons, Brendan C., Smith, Sterling Paul, Neiser, Tom F., Shi, Nan, and Candy, Jeff. Elevating zero dimensional global scaling predictions to self-consistent theory-based simulations. United States: N. p., 2023.
Web. doi:10.1063/5.0148886.
Slendebroek, Tim, McClenaghan, Joseph, Meneghini, Orso M., Lyons, Brendan C., Smith, Sterling Paul, Neiser, Tom F., Shi, Nan, & Candy, Jeff. Elevating zero dimensional global scaling predictions to self-consistent theory-based simulations. United States. https://doi.org/10.1063/5.0148886
Slendebroek, Tim, McClenaghan, Joseph, Meneghini, Orso M., Lyons, Brendan C., Smith, Sterling Paul, Neiser, Tom F., Shi, Nan, and Candy, Jeff. Mon .
"Elevating zero dimensional global scaling predictions to self-consistent theory-based simulations". United States. https://doi.org/10.1063/5.0148886.
@article{osti_1994988,
title = {Elevating zero dimensional global scaling predictions to self-consistent theory-based simulations},
author = {Slendebroek, Tim and McClenaghan, Joseph and Meneghini, Orso M. and Lyons, Brendan C. and Smith, Sterling Paul and Neiser, Tom F. and Shi, Nan and Candy, Jeff},
abstractNote = {In this work, we have developed an innovative workflow, Stability, Transport, Equilibrium, and Pedestal (STEP)-zero-dimensional (0D), within the OMFIT integrated modeling framework. Through systematic validation against the International Tokamak Physics Activity global H-mode confinement database, we demonstrated that STEP-0D, on average, predicts the energy confinement time with a mean relative error of less than 19%. Moreover, this workflow showed promising potential in predicting plasmas for proposed fusion reactors such as the affordable, robust, compact (ARC) reactor, the European demonstration power plant (EU-DEMO), and the China fusion engineering test reactor (CFETR) indicating moderate H-factors between 0.9 and 1.2. STEP-0D allows theory-based prediction of tokamak scenarios, beginning with 0D quantities. The workflow initiates with the PRO-create module, generating physically consistent plasma profiles and equilibrium using the same 0D quantities as the IPB98(y,2) confinement scaling. This sets the starting point for the STEP module, which further iterates between theory-based physics models of equilibrium, core transport, and pedestal to yield a self-consistent solution. Given these attributes, STEP-0D not only improves the accuracy of predicting plasma performance but also provides a path toward a novel fusion power plant design workflow. When integrated with engineering and costing models within an optimization, this new approach could eliminate the iterative reconciliation between plasma models of varying fidelity. This potential for a more efficient design process underpins STEP-0D's significant contribution to future fusion power plant development.},
doi = {10.1063/5.0148886},
journal = {Physics of Plasmas},
number = 7,
volume = 30,
place = {United States},
year = {Mon Jul 31 00:00:00 EDT 2023},
month = {Mon Jul 31 00:00:00 EDT 2023}
}
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