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MHD Simulations with PSI-TET

Author: George J. Marklin
Requested Type: Poster Only
Submitted: 2011-06-07 15:59:36

Co-authors: C.J.Hansen, T.R.Jarboe

Contact Info:
University of Washington/PSI-Center
120 AERB, Box 352250
Seattle, WA   98195
USA

Abstract Text:
The PSI Center's tetrahedral mesh MHD equilibrium code, PSI-TET, has been upgraded to solve the time-dependent linear ideal MHD equations with either bare conductor or insulated conductor boundaries. This poster will present solutions for the tilting instability of a cylindrical spheromak showing the difference in the flow pattern and growth rates for the 2 boundary conditions. Another poster by C. J. Hansen et. al. will show detailed computations for HIT-SI, analysing the stability of homogeneous (decaying) and inhomogeneous (driven) Taylor states and 3D equilibria with non-uniform lambda profiles, all using insulated conductor boundaries.

Further upgrades of PSI-TET into a fully time dependent resistive MHD code are underway and should be complete by the time of this meeting. This poster will describe the numerical methods for solving both the linear and non-linear MHD equations and the numerical technique for implementing the insulated conductor boundary condition. Solutions will be presented of non-linear resistive MHD simulations of the cylindrical spheromak tilting mode and of an inductively formed and sustained spheromak in the HIT-SI experiment with insulated conductor boundaries and specified time varying injector fluxes and currents.

Characterization: A7

Comments:
Please place with other PSI-Center posters

University of Washington

Workshop on Innovation in Fusion Science (ICC2011) and
US-Japan Workshop on Compact Torus Plasma
August 16-19, 2011
Seattle, Washington

ICC 2011