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arXiv 1102.5436math.AP
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Korteweg系统的新熵、整体弱解的存在性及Prodi-Serrin定理

New entropy for Korteweg's system, existence of global weak solution and Prodi-Serrin theorem

B Haspot

摘要:

本文证明了由J. EDunn和J.Serrin(1985)(见\cite{fDS})导出的毛细管流体一般等温模型的新的熵估计,该模型可用作相变模型。更准确地说,我们将得到新的估计的密度,我们将给出一个新的结构的Korteweg系统,使我们能够获得整体弱解的存在性。证明的关键在于引入了一个新的有效速度,这个证明受到了A。Mellet和A.血管(见\cite{fMV})。在第二部分中,我们将给出该系统的Prody-Serrin爆破准则,它广泛地改进了\cite{Hprepa}的结果和已知的可压缩系统的结果。

英文摘要:

This work is devoted to prove new entropy estimates for a general isothermal model of capillary fluids derived by J.E Dunn and J.Serrin (1985) (see \cite{fDS}), which can be used as a phase transition model. More precisely we will derive new estimates for the density and we will give a new structure for the Korteweg system which allow us to obtain the existence of global weak solution. The key of the proof comes from the introduction of a new effective velocity.The proof is widely inspired from the works of A. Mellet and A. Vasseur (see \cite{fMV}). In a second part, we shall give a Prody-Serrin blow-up criterion for this system which widely improves the results of \cite{Hprepa} and the known results on compressible systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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