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The SIM2D code was developed at the University of Rochester to simulate transonic poloidal flows in tokamak plasmas. The purpose of the simulations is to prove that the transonic equilibrium states calculated with FLOW are dynamically accessible, and to observe the formation and evolution of transonic pedestals with realistic simulation parameters.

Simulations are based on the resistive magnetohydrodynamic model. A resistive region outside the plasma is included to simulate the halo/vacuum region.
SIM2D is based on a finite-difference, predictor-corrector explicit integration method in Cartesian coordinates. For the time being, boundary conditions have been implemented only for square boundaries. For fixed-boundary simulations, rigid-wall boundary conditions are used. For free-boundary simulations, outflow boundary conditions are used.

The FORTRAN source files are freely available:

SIM2D source files

SIM2D animations

Warning: the code is not very user-friendly, and no user manual exists at this time. Users should contact Dr. Guazzotto for instructions on the code use.



References and support material:


Publications describing the code and its results:

L. Guazzotto and R. Betti, Phys. Rev. Lett. 107, 125002 (2011)

L. Guazzotto and R. Betti, Phys. Plasmas, 18, 092509 (2011)

L. Guazzotto and R. Betti, Nucl. Fusion 52 114006 (2012)

The 2010 Sherwood oral presentation is available for download:

2010 Sherwood presentation
Sherwood presentation movies

Another brief description of the code is also available:

EPS transcript for the fixed-boundary version of the code

Copyright notes:

1) For the Physical Review Letters paper:

Copyright American Institute of Physics. These articles may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. A complete statement on APS copyright information can be found here.

2) For the Physics of Plasmas paper:

Copyright American Institute of Physics. These articles may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

3) For the Nuclear Fusion paper:

This is an author-created, un-copyedited version of an article accepted for publication in Nuclear Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at (IOP website)





last modified November 5 2014