کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
501943 863671 2015 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Achievable efficiency of numerical methods for simulations of solar surface convection
ترجمه فارسی عنوان
کارایی قابل دستیابی روش های عددی برای شبیه سازی جابجایی سطح خورشید
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی

We investigate the achievable efficiency of both the time and the space discretisation methods used in Antares for mixed parabolic–hyperbolic problems. We show that the fifth order variant of WENO combined with a second order Runge–Kutta scheme is not only more accurate than standard first and second order schemes, but also more efficient taking the computation time into account. Then, we calculate the error decay rates of WENO with several explicit Runge–Kutta schemes for advective and diffusive problems with smooth and non-smooth initial conditions. With this data, we estimate the computational costs of three-dimensional simulations of stellar surface convection and show that SSP RK(3,2) is the most efficient scheme considered in this comparison.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Physics Communications - Volume 188, March 2015, Pages 7–20
نویسندگان
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