Statistical properties of an enstrophy conserving finite element discretisation for the stochastic quasi-geostrophic equation
Statistical properties of an enstrophy conserving finite element discretisation for the stochastic quasi-geostrophic equation
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随机准地转方程熵守恒有限元离散的统计特性
DOI:
10.1080/03091929.2018.1549240
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发表时间:
2018
影响因子:
1.3
通讯作者:
Bendall T
中科院分区:
文献类型:
--
作者:
Bendall T
A framework of variational principles for stochastic fluid dynamics was presented by Holm, and these stochastic equations were also derived by Cotter, Gottwald and Holm. We present a conforming finite element discretisation for the stochastic quasi-geostrophic equation that was derived from this framework. The discretisation preserves the first two moments of potential vorticity, i.e. the mean potential vorticity and the enstrophy. Following the work of Dubinkina and Frank, who investigated the statistical mechanics of discretisations of the deterministic quasi-geostrophic equation, we investigate the statistical mechanics of our discretisation of the stochastic quasi-geostrophic equation. We compare the statistical properties of our discretisation with the Gibbs distribution under assumption of these conserved quantities, finding that there is an agreement between the statistics under a wide range of set-ups.
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DOI:
10.1098/rspa.2017.0388
发表时间:
2017-09
期刊:
Proceedings. Mathematical, physical, and engineering sciences
影响因子:
--
作者:
Cotter CJ;Gottwald GA;Holm DD
通讯作者:
Holm DD
DOI:
10.1016/j.jcp.2007.09.002
发表时间:
2007
期刊:
J. Comput. Phys.
影响因子:
--
作者:
S. Dubinkina;J. Frank
通讯作者:
J. Frank
影响因子:
3.7
作者:
CARNEVALE, GF;FREDERIKSEN, JS
通讯作者:
FREDERIKSEN, JS
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
W. Merryfield;P. Cummins;G. Holloway
通讯作者:
G. Holloway
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
Darryl D. Holm;V. Zeitlin
通讯作者:
V. Zeitlin