کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6929155 1449357 2018 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A purely Lagrangian method for simulating the shallow water equations on a sphere using smooth particle hydrodynamics
ترجمه فارسی عنوان
یک روش صرفا لاگرانژ برای شبیه سازی معادلات آب کم عمق در یک کره با استفاده از هیدرودینامیک ذرات صاف
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
It has long been suggested that a purely Lagrangian solution to global-scale atmospheric/oceanic flows can potentially outperform tradition Eulerian schemes. Meanwhile, a demonstration of a scalable and practical framework remains elusive. Motivated by recent progress in particle-based methods when applied to convection dominated flows, this work presents a fully Lagrangian method for solving the inviscid shallow water equations on a rotating sphere in a smooth particle hydrodynamics framework. To avoid singularities at the poles, the governing equations are solved in Cartesian coordinates, augmented with a Lagrange multiplier to ensure that fluid particles are constrained to the surface of the sphere. An underlying grid in spherical coordinates is used to facilitate efficient neighbor detection and parallelization. The method is applied to a suite of canonical test cases, and conservation, accuracy, and parallel performance are assessed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 356, 1 March 2018, Pages 174-191
نویسندگان
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