Total energy and potential enstrophy conserving schemes for the shallow water equations using Hamiltonian methods – Part 1: Derivation and properties
Total energy and potential enstrophy conserving schemes for the shallow water equations using Hamiltonian methods – Part 1: Derivation and properties
复制标题
使用哈密顿方法的浅水方程的总能量和势熵守恒方案 - 第 1 部分:推导和性质
DOI:
10.5194/gmd-10-791-2017
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发表时间:
2016
影响因子:
5.1
通讯作者:
D. Randall
中科院分区:
文献类型:
--
作者:
C. Eldred;D. Randall
Abstract. The shallow water equations provide a useful analogue of the fully compressible Euler equations since they have similar characteristics: conservation laws, inertia-gravity and Rossby waves, and a (quasi-) balanced state. In order to obtain realistic simulation results, it is desirable that numerical models have discrete analogues of these properties. Two prototypical examples of such schemes are the 1981 Arakawa and Lamb (AL81) C-grid total energy and potential enstrophy conserving scheme, and the 2007 Salmon (S07) Z-grid total energy and potential enstrophy conserving scheme. Unfortunately, the AL81 scheme is restricted to logically square, orthogonal grids, and the S07 scheme is restricted to uniform square grids. The current work extends the AL81 scheme to arbitrary non-orthogonal polygonal grids and the S07 scheme to arbitrary orthogonal spherical polygonal grids in a manner that allows for both total energy and potential enstrophy conservation, by combining Hamiltonian methods (work done by Salmon, Gassmann, Dubos, and others) and discrete exterior calculus (Thuburn, Cotter, Dubos, Ringler, Skamarock, Klemp, and others). Detailed results of the schemes applied to standard test cases are deferred to part 2 of this series of papers.
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影响因子:
3.2
作者:
H. Weller;J. Thuburn;C. Cotter
通讯作者:
H. Weller;J. Thuburn;C. Cotter
影响因子:
3.2
作者:
H. Weller
通讯作者:
H. Weller
DOI:
10.48550/arxiv.1103.2440
发表时间:
2011
期刊:
--
影响因子:
--
作者:
Cotter C
通讯作者:
Cotter C
影响因子:
5.1
作者:
Weller H
通讯作者:
Weller H