The impact of collisionality, FLR, and parallel closure effects on instabilities in the tokamak pedestal: Numerical studies with the NIMROD code
- Tech-X Corp., Boulder, CO (United States)
- General Atomics, San Diego, CA (United States)
The extended-MHD NIMROD code [C. R. Sovinec and J. R. King, J. Comput. Phys. 229, 5803 (2010)] is verified against the ideal-MHD ELITE code [H. R. Wilson et al., Phys. Plasmas 9, 1277 (2002)] on a diverted tokamak discharge. When the NIMROD model complexity is increased incrementally, resistive and first-order finite-Larmour radius effects are destabilizing and stabilizing, respectively. Lastly, the full result is compared to local analytic calculations which are found to overpredict both the resistive destabilization and drift stabilization in comparison to the NIMROD computations.
- Research Organization:
- Tech-X Corp., Boulder, CO (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Grant/Contract Number:
- FC02-08ER54972; AC02-05CH11231; FC02-06ER54875; FG02-08ER54972
- OSTI ID:
- 1259284
- Alternate ID(s):
- OSTI ID: 1420655
- Journal Information:
- Physics of Plasmas, Vol. 23, Issue 6; Related Information: Dataset: J. R. King (2016). “NIMROD growth rates (1/s) by finite ele-ment poly_degree (columns) and case from “the impact of collisionality,FLR and parallel closure effects on instabilities in the tokamak pedestal:Numerical studies with the nimrod code”,” Zenodo.http://dx.doi.org/10.5281/zenodo.50089.; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 13 works
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