Abstract Details
Abstracts
Author: Ben Dudson
Requested Type: Poster
Submitted: 2023-03-30 18:23:02
Co-authors: M. Kryjak, H. Muhammed, P. Hill, J.T. Omotani
Contact Info:
Lawrence Livermore Natl Lab
7000 East Avenue
Livermore, CA 94550
US
Abstract Text:
Transport in the edge and divertor of high-power tokamak plasmas strongly impacts both plasma facing material lifetime and core plasma performance. Historically, modeling tools have either included detailed neutral gas and impurity interactions while approximating turbulent transport by ad-hoc diffusion coefficients, or they have modelled the turbulence while neglecting atomic & molecular processes. We present one of the ongoing efforts to construct and apply tools that self-consistently include all these processes, and so can capture nonlinear interactions between transport and turbulent processes.
Over the last 5 years we have developed[1,2] and applied[3,4] the Hermes-3 code[5], building on BOUT++ to model self-consistently both turbulence and atomic processes in tokamak X-point and other geometries. We will show examples of verification and validation of transport and turbulence simulations in toroidal and linear geometries, and we hope to stimulate collaborations to further develop and apply this open-source simulation tool.
References
[1] Dudson, Kryjak, Muhammed, Hill and Omotani 2023: https://doi.org/10.48550/arXiv.2303.12131
[2] Dudson & Leddy 2017: https://doi.org/10.1088/1361-6587/aa63d2
[3] Leddy, Dudson and Willett 2017: https://doi.org/10.1016/j.nme.2016.09.020
[4] Dudson et al 2021: https://doi.org/10.1088/1361-6587/abe21d
[5] Hermes-3 open-source code: https://github.com/bendudson/hermes-3/
Acknowledgements: This work was in part performed under the auspices of the U.S. DoE by LLNL under Contract DE-AC52-07NA27344, and received funding from LLNL LDRD 23-ERD-015.
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