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Граничные задачи для уравнений вязкого теплопроводного газа в нецилиндрических возрастающих по времени областях

Граничные задачи для уравнений вязкого теплопроводного газа в нецилиндрических возрастающих по времени областях

Abstract

In this paper we prove the global solvability of the initial-boundary value problems for the complete system of equations describing one-dimensional nonstationary flow of the viscous heat-conducting gas in time-increasing non-cylindrical domains. Local existence and uniqueness of these problems are proved in earlier articles by Kazhikhov A.V. and Kaliev I.A. This is why, the proof of the global in time existence and uniqueness theorem is connected with obtaining a priori estimates, in which the constant depend only on the data of the problem and the value of the time interval Т, but do not depend on the period of existence of a local solution. The study is made in terms of Eulerian variables.

В данной работе для полной системы уравнений одномерного нестационарного движения вязкого теплопроводного газа доказывается глобальная разрешимость начально-краевых задач в нецилидрических возрастающих по времени областях. Локальная теорема существования и единственности рассматриваемых задач доказана в более ранних работах Кажихова А.В. и Калиева И.А. Поэтому доказательство теоремы существования и единственности "в целом" по времени связано c получением априорных оценок, постоянные в которых зависят только от данных задачи и величины интервала времени Т, но не зависят от промежутка существования локального решения. Исследования проводятся в эйлеровых переменных.

Keywords

СИСТЕМА УРАВНЕНИЙ НАВЬЕ-СТОКСА, ТЕПЛОПРОВОДНЫЙ ГАЗ, ГЛОБАЛЬНАЯ РАЗРЕШИМОСТЬ, НЕЦИЛИНДРИЧЕСКИЕ ВОЗРАСТАЮЩИЕ ПО ВРЕМЕНИ ОБЛАСТИ

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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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