Acta mathematica scientia,Series B ›› 2019, Vol. 39 ›› Issue (6): 1639-1660.doi: 10.1007/s10473-019-0614-7

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A GLOBAL EXISTENCE RESULT FOR KORTEWEG SYSTEM IN THE CRITICAL LP FRAMEWORK

Zhensheng GAO1, Yan LIANG1, Zhong TAN2   

  1. 1. School of Mathematical Sciences, Huaqiao University, Quanzhou 362021, China;
    2. School of Mathematical Sciences, Xiamen University, Xiamen 361005, China
  • Received:2018-05-02 Revised:2019-01-26 Online:2019-12-25 Published:2019-12-30
  • Contact: Zhong TAN,E-mail:ztan85@163.com E-mail:ztan85@163.com
  • Supported by:
    Gao's research was supported by Natural Science Foundation of Fujian Province (JZ160406), Tan's research was partly supported by National Natural Science Foundation of China-NSAF (11271305 and 11531010).

Abstract: The purpose of this work is to investigate the initial value problem for a general isothermal model of capillary fluids derived by Dunn and Serrin[12], which can be used as a phase transition model. Motivated by[9], we aim at extending the work by Danchin-Desjardins[11] to a critical framework which is not related to the energy space. For small perturbations of a stable equilibrium state in the sense of suitable Lp-type Besov norms, we establish the global existence. As a consequence, like for incompressible flows, one may exhibit a class of large highly oscillating initial velocity fields for which global existence and uniqueness holds true.

Key words: Korteweg system, global existence, Lp-type Besov norms

CLC Number: 

  • 35B40
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