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Entropy Production and Admissibility of Shocks

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Abstract

In shock wave theory there are two considerations in selecting the physically relevant shock waves. There is the admissibility criterion for the well-posedness of hyperbolic conservation laws. Another consideration concerns the entropy production across the shocks. The latter is natural from the physical point of view, but is not sufficient in its straightforward formulation, if the system is not genuinely nonlinear. In this paper we propose the principles of increasing entropy production and that of the superposition of shocks. These principles are shown to be equivalent to the admissibility criterion.

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Correspondence to Tai-Ping Liu*.

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* Partially supported by the NSF (Grant DMS-9803323).

** Supported by fondi MIUR Progetto di interesse Nazionale Problemi Matematici Non Lineari di Propagazione e Stabilità nei Modelli del Continuo Coordinatore T. Ruggeri, by the GNFM-INDAM, and by the Istituto Nazionale di Fisica Nucleare (INFN).

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Liu*, TP., Ruggeri**, T. Entropy Production and Admissibility of Shocks. Acta Mathematicae Applicatae Sinica, English Series 19, 1–12 (2003). https://doi.org/10.1007/s10255-003-0074-6

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  • DOI: https://doi.org/10.1007/s10255-003-0074-6

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