On multi-dimensional compressible flows of nematic liquid crystals with large initial energy in a bounded domain

On multi-dimensional compressible flows of nematic liquid crystals with large initial energy in a bounded domain
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有界域内大初始能量向列液晶的多维可压缩流动

DOI:
10.1016/j.jfa.2013.07.026
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发表时间:
2013-02
影响因子:
1.7
通讯作者:
Dehua Wang
Dehua Wang
中科院分区:
数学1区
文献类型:
--
作者:
Fei Jiang;Song Jiang;Dehua Wang

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研究了一类具有大初始能量的可压缩液晶流动的简化Ericksen-Leslie方程组在有界区域Ω <$RN(其中N= 2或3)中整体弱解的存在性.利用极大值原理、Nirenberg插值不等式和对初始方向场d 0的第N个分量施加的小性条件,克服了超临界非线性引起的困难|布吕德|在角动量方程组中,采用一种改进的三维近似格式和可压缩Navier-Stokes方程的弱收敛性证明,在初始密度和速度不满足任何小性条件的情况下,证明了具有大初始能量的初边值问题整体弱解的存在性.
We study the global existence of weak solutions to a multi-dimensional simplified Ericksen–Leslie system for compressible flows of nematic liquid crystals with large initial energy in a bounded domain Ω⊂ R N, where N= 2 or 3. By exploiting a maximum principle, Nirenbergʼs interpolation inequality and a smallness condition imposed on the N-th component of initial direction field d 0 to overcome the difficulties induced by the supercritical nonlinearity|∇ d| 2 d in the equations of angular momentum, and then adapting a modified three-dimensional approximation scheme and the weak convergence arguments for the compressible Navier–Stokes equations, we establish the global existence of weak solutions to the initial-boundary problem with large initial energy and without any smallness condition on the initial density and velocity.
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