利用耗散弱解研究可压缩欧拉方程剩余分布格式的收敛性

Remi Abgrall, Maria Lukacova-Medvid'ova, Philipp Offner
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引用次数: 3

摘要

本文证明了残差分布格式对欧拉方程的耗散弱解的收敛性。我们需要保证RD方案满足底层结构保留方法的性质,如密度和内能的正性。因此,RD格式导致欧拉方程的一致和稳定的近似。我们的结果可以看作是拉克斯-里奇迈耶等价定理在非线性问题上的推广,即一致性加稳定性等价于收敛性。
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On the convergence of residual distribution schemes for the compressible Euler equations via dissipative weak solutions
In this work, we prove the convergence of residual distribution (RD) schemes to dissipative weak solutions of the Euler equations. We need to guarantee that the RD schemes are fulfilling the underlying structure preserving methods properties such as positivity of density and internal energy. Consequently, the RD schemes lead to a consistent and stable approximation of the Euler equations. Our result can be seen as a generalization of the Lax–Richtmyer equivalence theorem to nonlinear problems that consistency plus stability is equivalent to convergence.
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