کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5011690 | 1462654 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Well-balanced methods for the shallow water equations in spherical coordinates
ترجمه فارسی عنوان
روش های متعادل برای معادلات آب کم عمق در مختصات کروی
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کلمات کلیدی
مدل آب های کم عمق، روش های متعادل، روشهای محدود حجم، تقریبا حل کننده های ریمان، روش های مرتب بالا ،،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
چکیده انگلیسی
The goal of this work is to obtain a family of explicit high order well-balanced methods for the shallow water equations in spherical coordinates. Application of shallow water models to large scale problems requires the use of spherical coordinates: this is the case, for instance, of the simulation of the propagation of a Tsunami wave through the ocean. Although the PDE system is similar to the shallow water equations in Cartesian coordinates, new source terms appear. As a consequence, the derivation of high order numerical methods that preserve water at rest solutions is not as straightforward as in that case. Finite Volume methods are considered based on a first order path-conservative scheme and high order reconstruction operators. Numerical methods based on these ingredients have been successfully applied previously to the nonlinear SWEs in Cartesian coordinates. Some numerical tests to check the well-balancing and high order properties of the scheme, as well as its ability to simulate planetary waves or tsunami waves over realistic bathymetries are presented.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Fluids - Volume 157, 3 November 2017, Pages 196-207
Journal: Computers & Fluids - Volume 157, 3 November 2017, Pages 196-207
نویسندگان
Manuel J. Castro, Sergio Ortega, Carlos Parés,