کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4967301 1449373 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A conservative scheme for Vlasov Poisson Landau modeling collisional plasmas
ترجمه فارسی عنوان
یک طرح محافظه کارانه برای پلاسون لوسآوو پواسون لاندو مدلسازی پلاسما برخوردار است
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
We have developed a deterministic conservative solver for the inhomogeneous Fokker-Planck-Landau equation coupled with the Poisson equation, which is a classical mean-field primary model for collisional plasmas. Two subproblems, i.e. the Vlasov-Poisson problem and homogeneous Landau problem, are obtained through time-splitting methods, and treated separately by the Runge-Kutta Discontinuous Galerkin method and a conservative spectral method, respectively. To ensure conservation when projecting between the two different computing grids, a special conservation routine is designed to link the solutions of these two subproblems. This conservation routine accurately enforces conservation of moments in Fourier space. The entire numerical scheme is implemented with parallelization with hybrid MPI and OpenMP. Numerical experiments are provided to study linear and nonlinear Landau Damping problems and two-stream flow problem as well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 340, 1 July 2017, Pages 470-497
نویسندگان
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