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BOUT++: a framework for parallel plasma fluid simulations
- Source :
- Computer Physics Communications 180 (2009), pp. 1467-1480
- Publication Year :
- 2008
-
Abstract
- A new modular code called BOUT++ is presented, which simulates 3D fluid equations in curvilinear coordinates. Although aimed at simulating Edge Localised Modes (ELMs) in tokamak X-point geometry, the code is able to simulate a wide range of fluid models (magnetised and unmagnetised) involving an arbitrary number of scalar and vector fields, in a wide range of geometries. Time evolution is fully implicit, and 3rd-order WENO schemes are implemented. Benchmarks are presented for linear and non-linear problems (the Orszag-Tang vortex) showing good agreement. Performance of the code is tested by scaling with problem size and processor number, showing efficient scaling to thousands of processors. Linear initial-value simulations of ELMs using reduced ideal MHD are presented, and the results compared to the ELITE linear MHD eigenvalue code. The resulting mode-structures and growth-rate are found to be in good agreement (BOUT++ = 0.245, ELITE = 0.239). To our knowledge, this is the first time dissipationless, initial-value simulations of ELMs have been successfully demonstrated.<br />Comment: Submitted to Computer Physics Communications. Revised to reduce page count. 18 pages, 16 figures
- Subjects :
- Physics - Plasma Physics
Physics - Computational Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Computer Physics Communications 180 (2009), pp. 1467-1480
- Publication Type :
- Report
- Accession number :
- edsarx.0810.5757
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.cpc.2009.03.008