کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
503527 863778 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Constructing plasma response models from full toroidal magnetohydrodynamic computations
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Constructing plasma response models from full toroidal magnetohydrodynamic computations
چکیده انگلیسی

We explore accurate and efficient algorithms for constructing plasma response models, based on the computed data using a full toroidal MHD stability code MARS-F. These response models are used to study feedback stabilization of resistive wall modes for fusion plasmas. Three approaches are discussed and compared. A direct full-model computation offers the most accurate response, unfortunately without producing analytical expressions for the response model. The pole-residue expansion methods yield analytical and asymptotically rigorous response models. A low-order Padé approximation serves as a model reduction technique that simplifies the controller design, while keeping a reasonable accuracy for the response models. From the computational viewpoint, the most efficient approaches are the pole-residue expansion based on eigenfunction projection, and the low-order Padé approximation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Physics Communications - Volume 176, Issue 3, 1 February 2007, Pages 161–169
نویسندگان
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