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arXiv 1702.04870math.AP
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完备Euler方程组的测度值解

Measure-valued solutions to the complete Euler system

Jan Brezina, Eduard Feireisl

摘要:

本文将耗散测度解的概念引入描述无粘可压缩流体运动的完备欧拉方程组。这些解决方案的特点是由一个参数化的(杨)措施和耗散缺陷的总能量平衡。在Young测度所满足的方程中,耗散亏损对浓度误差起主导作用.耗散测度值解可以看作是欧拉系统保持其结构稳定性的解的最一般概念。特别是,我们表明,耗散测度值的解决方案,必然与经典的,其寿命,只要他们共享相同的初始数据。

英文摘要:

We introduce the concept of dissipative measure-valued solution to the complete Euler system describing the motion of an inviscid compressible fluid. These solutions are characterized by a parameterized (Young) measure and a dissipation defect in the total energy balance. The dissipation defect dominates the concentration errors in the equations satisfied by the Young measure. A dissipative measure-valued solution can be seen as the most general concept of solution to the Euler system retaining its structural stability. In particular, we show that a dissipative measure-valued solution necessarily coincides with a classical one on its life span provided they share the same initial data.

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