LOW MACH NUMBER LIMIT FOR THE COMPRESSIBLE INERTIAL QIAN-SHENG MODEL OF LIQUID CRYSTALS: CONVERGENCE FOR CLASSICAL SOLUTIONS

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Yi-Long LUO
  • Yangjun MA

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)921-966
Journal / PublicationDiscrete and Continuous Dynamical Systems
Volume41
Issue number2
Publication statusPublished - Feb 2021

Abstract

In this paper we study the incompressible limit of the compressible inertial Qian-Sheng model for liquid crystal flow. We first derive the uniform energy estimates on the Mach number ε for both the compressible system and its differential system with respect to time under uniformly in ε small initial data. Then, based on these uniform estimates, we pass to the limit in the compressible system as ε → 0, so that we establish the global classical solution of the incompressible system by compactness arguments. We emphasize that, on global in time existence of the incompressible inertial Qian-Sheng model under small size of initial data, the range of our assumptions on the coefficients are significantly enlarged, comparing to the results of De Anna and Zarnescu's work [6]. Moreover, we also obtain the convergence rates associated with L2 norm with well-prepared initial data.

Research Area(s)

  • Compressible inertial Qian-Sheng model, Incompressible limit, Uniform bounds, Low Mach number limit, Convergence rate