کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
520448 867720 2012 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reconstruction of the equilibrium of the plasma in a Tokamak and identification of the current density profile in real time
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Reconstruction of the equilibrium of the plasma in a Tokamak and identification of the current density profile in real time
چکیده انگلیسی

The reconstruction of the equilibrium of a plasma in a Tokamak is a free boundary problem described by the Grad–Shafranov equation in axisymmetric configuration. The right-hand side of this equation is a nonlinear source, which represents the toroidal component of the plasma current density. This paper deals with the identification of this nonlinearity source from experimental measurements in real time. The proposed method is based on a fixed point algorithm, a finite element resolution, a reduced basis method and a least-square optimization formulation. This is implemented in a software called Equinox with which several numerical experiments are conducted to explore the identification problem. It is shown that the identification of the profile of the averaged current density and of the safety factor as a function of the poloidal flux is very robust.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 231, Issue 3, 1 February 2012, Pages 960–980
نویسندگان
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