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оригинального документа
: http://num-meth.srcc.msu.ru/english/zhurnal/tom_2014/v15r154.html
Дата изменения: Thu Nov 13 13:15:47 2014 Дата индексирования: Sun Apr 10 03:06:08 2016 Кодировка: IBM-866 |
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"A contour-advective semi-Lagrangian numerical algorithm for the problem of
interaction between a vortex and an isolated topographic feature on a
ѕ’-plane" Baranov A.A. and Permyakov M.S. |
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The main stages of a contour-advective semi-Lagrangian algorithm for the simulation of inviscid incompressible flows with variable depth on the rotating Earth are considered. The numerical results for the case when a vortex encounters an axisymmetric topographic feature on a ѕ’-plane are discussed. The accuracy of the method for different values of the its parameters is numerically estimated. The contour-advective method is compared with the finite-difference method. It is shown that the contour-advective semi-Lagrangian algorithm is very efficient to represent a fine-scale structures of potential vorticity fields. Keywords: geophysical fluid dynamics, contour dynamics, contour advection, topography, ѕ’-plane, potential vorticity.
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