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Overview of PSI-Center Simulations of Validation Platform Experiments

Author: Thomas R. Jarboe
Requested Type: Poster Only
Submitted: 2014-05-29 11:37:06

Co-authors: B.A.Nelson, R.D.Milroy, C.J.Hansen, A.H.Glasser, G.J.Marklin, P.C.Norgaard, U.Shumlak, J.B.O’Bryan, C.R.Sovinec, E.Held, J.-Y.Ji, and V.S.Lukin

Contact Info:
University of Washington
120 AERB, 352250
Seattle, Washington   98195

Abstract Text:
The Plasma Science and Innovation Center (PSI-Center - http://www.psicenter.org) assists collaborating validation platform experiments with extended MHD simulations. Present collaborators include the Bellan Plasma Group (Caltech), CTH (Auburn U), FRX-L (LANL), HBT-EP (Columbia), HIT-SI (U Wash - UW), LTX (PPPL), MAST (Culham), Pegasus (U Wisc-Madison), and SSX (Swarthmore College). Modifications have been made to the NIMROD, HiFi, and PSI-Tet codes to specifically model these experiments, including mesh generation/refinement, application of appropriate boundary conditions (time-varying external fields, insulating, sheath, and open BCs, local density/heat sources, etc.), moment-based non-local closures, 2D & 3D equilibria (including integrated DCON stability calculations), scalable solvers, and kinetic and neutral particle interactions. The PSI-Center is presently adding dynamic neutrals to NIMROD. When implemented in NIMROD, results with dynamic neutrals will be compared to the dynamic neutral particle physics in the 2D version of HiFi. After verification in 2D, HiFi and NIMROD calculations with dynamic neutrals will be made in 3D for comparison and validation with the collaborating experiments. Validation metrics based on biorthogonal decomposition (BD) have been developed to aid comparison to temporal-spatial experimental measurements. Post-processing and visualization tools have also been developed and distributed to the wider simulation community. Results from these simulations, as well as an overview of the PSI-Center status and plans will be presented.
Work supported by the US DoE

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Workshop on Exploratory Topics in Plasma and Fusion Research (EPR) and US-Japan Compact Torus (CT) Workshop
August 5-8, 2014
Madison, Wisconsin

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