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Fusion energy: Progress, partnerships, and the path to deployment
Over the past decade, fusion energy has moved decisively from scientific aspiration toward a credible pathway to a new energy technology. Thanks to long-term federal support, we have significantly advanced our fundamental understanding of plasma physics—the behavior of the superheated gases at the heart of fusion devices. This knowledge will enable the creation and control of fusion fuel under conditions required for future power plants. Our progress is exemplified by breakthroughs at the National Ignition Facility and the Joint European Torus.
R. A. Vesey
Fusion Science and Technology | Volume 21 | Number 3 | May 1992 | Pages 1630-1634
Plasma Engineering | doi.org/10.13182/FST92-A29953
Articles are hosted by Taylor and Francis Online.
The fluid equations modeling plasma transport in the tokamak scrape-off region are discretized via optimal upwind finite element methods developed for convection-dominated problems. These methods allow the non-orthogonal geometry of the edge region to be represented accurately, while applying the necessary boundary conditions. Newton's method with mesh sequencing is used to arrive at a converged solution to the resulting nonlinear algebraic system of equations. Preliminary results are presented for a 20x20 finite element discretization of the ASDEX edge region, with some simplifications. General agreement between the finite element solution and the Braams code B2 is observed. The code will be extended to allow equilibrium-based meshes and arbitrary boundary geometries.