数学物理学报(英文版) ›› 2016, Vol. 36 ›› Issue (4): 973-1014.doi: 10.1016/S0252-9602(16)30054-6

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GLOBAL EXISTENCE OF WEAK SOLUTIONS TO THE NON-ISOTHERMAL NEMATIC LIQUID CRYSTALS IN 2D

李进开1,2, 辛周平1   

  1. 1 The Institute of Mathematical Sciences, The Chinese University of Hong Kong, Hong Kong, China;
    2 Department of Computer Science and Applied Mathematics, Weizmann Institute of Science Rehovot 76100, Israel
  • 收稿日期:2016-02-26 出版日期:2016-08-25 发布日期:2016-08-25
  • 通讯作者: Zhouping XIN,E-mail:zpxin@ims.cuhk.edu.hk E-mail:zpxin@ims.cuhk.edu.hk
  • 作者简介:Jinkai LI,E-mail:jklimath@gmail.com
  • 基金资助:

    This research is supported partially by Zheng Ge Ru Foundation, Hong Kong RGC Earmarked Research Grants 14305315, CUHK4041/11P and CUHK4048/13P, a Focus Area Grant from The Chinese University of Hong Kong, a Croucher Foundation-CAS Joint Grant, and a NSFC/RGC Joint Research Scheme (N-CUHK443/14).

GLOBAL EXISTENCE OF WEAK SOLUTIONS TO THE NON-ISOTHERMAL NEMATIC LIQUID CRYSTALS IN 2D

Jinkai LI1,2, Zhouping XIN1   

  1. 1 The Institute of Mathematical Sciences, The Chinese University of Hong Kong, Hong Kong, China;
    2 Department of Computer Science and Applied Mathematics, Weizmann Institute of Science Rehovot 76100, Israel
  • Received:2016-02-26 Online:2016-08-25 Published:2016-08-25
  • Contact: Zhouping XIN,E-mail:zpxin@ims.cuhk.edu.hk E-mail:zpxin@ims.cuhk.edu.hk
  • Supported by:

    This research is supported partially by Zheng Ge Ru Foundation, Hong Kong RGC Earmarked Research Grants 14305315, CUHK4041/11P and CUHK4048/13P, a Focus Area Grant from The Chinese University of Hong Kong, a Croucher Foundation-CAS Joint Grant, and a NSFC/RGC Joint Research Scheme (N-CUHK443/14).

摘要:

In this article, we prove the global existence of weak solutions to the non-isothermal nematic liquid crystal system on T2, on the basis of a new approximate system which is different from the classical Ginzburg-Landau approximation. Local in space energy inequalities are employed to recover the estimates on the second order spatial derivatives of the director fields locally in time, which cannot be derived from the basic energy balance. It is shown that these weak solutions satisfy the temperature equation, and also the total energy equation but away from at most finite many "singular" times, at which the energy concentration occurs and the director field losses its second order derivatives.

关键词: Global weak solutions, non-isothermal, nematic liquid crystals

Abstract:

In this article, we prove the global existence of weak solutions to the non-isothermal nematic liquid crystal system on T2, on the basis of a new approximate system which is different from the classical Ginzburg-Landau approximation. Local in space energy inequalities are employed to recover the estimates on the second order spatial derivatives of the director fields locally in time, which cannot be derived from the basic energy balance. It is shown that these weak solutions satisfy the temperature equation, and also the total energy equation but away from at most finite many "singular" times, at which the energy concentration occurs and the director field losses its second order derivatives.

Key words: Global weak solutions, non-isothermal, nematic liquid crystals

中图分类号: 

  • 35D30