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Применение итерационных методов для расчета сеточного аналога функции давления для трехмерного случая моделирования движения жидкости в озерах

Применение итерационных методов для расчета сеточного аналога функции давления для трехмерного случая моделирования движения жидкости в озерах

Abstract

Need of application of iterative methods for the solution of the equation of Poisson of rather net analog of function of pressure at three-dimensional modeling of the movement of liquid is proved and advantages of such methods in comparison with direct methods are shown. Examples of application of iterative methods for the solution of the equation of Poisson in a three-dimensional case of modeling of liquid in simple physical variables by means of which there is a net analog of function of pressure in each knot of the grid described the modelled space are shown. This net analog of function of pressure is necessary for calculation of net analogs of speeds of currents. Are given a way of the decision of the received algebraic system by Richardson´s method, Liebman´s method (iterations by incomplete stages), and also method of a consecutive top relaxation. Shortcomings and advantages of the described methods to the decision of this system of the algebraic equations are allocated

Обоснована необходимость применения итерационных методов для решения уравнения Пуассона относительно сеточного аналога функции давления при трехмерном моделировании движения жидкости и показаны преимущества таких методов по сравнению с прямыми методами. Показаны примеры применения итерационных методов для решения уравнения Пуассона в трехмерном случае моделирования жидкости в простых физических переменных, с помощью которого находится сеточный аналог функции давления в каждом узле сетки, описываемой моделируемое пространство. Данный сеточный аналог функции давления необходим для расчета сеточных аналогов скоростей течений. Приведены способ решения получаемой алгебраической системы методом Ричардсона, методом Либмана (итерации неполными этапами), а также методом последовательной верхней релаксации. Выделены недостатки и преимущества описываемых методов для решения данной системы алгебраических уравнений.

Keywords

МЕТОД ПОСЛЕДОВАТЕЛЬНОЙ ВЕРХНЕЙ РЕЛАКСАЦИИ, МЕТОД ЛИБМАНА, МЕТОД РИЧАРДСОНА, ИТЕРАЦИОННЫЕ МЕТОДЫ, УРАВНЕНИЕ ПУАССОНА, POISSON´S EQUATION, МОДЕЛИРОВАНИЕ ВОДНЫХ ОБЪЕКТОВ, LIEBMAN´S METHOD, RICHARDSON´S METHOD

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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