Global weak solution for a coupled compressible Navier-Stokes and Q-tensor system

Global weak solution for a coupled compressible Navier-Stokes and Q-tensor system
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DOI:
10.4310/cms.2015.v13.n1.a3
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发表时间:
2013-07
期刊:
arXiv: Analysis of PDEs
影响因子:
--
通讯作者:
Dehua Wang;Xiang Xu;Cheng Yu
Dehua Wang;Xiang Xu;Cheng Yu
中科院分区:
其他
文献类型:
--
作者:
Dehua Wang;Xiang Xu;Cheng Yu

文献摘要

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在本文中,我们研究了耦合可压缩纳维-斯托克斯/Q 张量系统,对三维有界空间域中的向列液晶流进行建模。使用弱收敛方法、紧致性和插值参数,建立了耦合系统的全局定义弱解的存在性和长期动态性。 Q 张量的对称性和无痕特性在此过程中发挥着关键作用。
In this paper, we study a coupled compressible Navier-Stokes/Q-tensor system modeling the nematic liquid crystal flow in a three-dimensional bounded spatial domain. The existence and long time dynamics of globally defined weak solutions for the coupled system are established, using weak convergence methods, compactness and interpolation arguments. The symmetry and traceless properties of the Q-tensor play key roles in this process.