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arXiv 2006.04210math.AP
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二维简化流体流动的弱紧性

Weak compactness of simplified nematic liquid flows in 2D

Hengrong Du, Tao Huang, Changyou Wang

摘要:

对于任意有界光滑区域$Ω\subset \R^2$,%(或$Ω=\R^2$),我们将建立简化Ericksen-Leslie系统解的弱紧性质,以及当参数趋于零时,Ginzburg-Landau型液晶流的弱解收敛到简化Ericksen-Leslie系统的弱解.这是基于Ericksen应力张量的补偿紧性,该补偿紧性是通过Ericksen-Leslie系统的Hopf微分的$L^p$ -估计和Ginzburg-Landau型液晶流的Pohozaev型论证得到的.

英文摘要:

For any bounded, smooth domain $Ω\subset \R^2$, %(or $Ω=\R^2$), we will establish the weak compactness property of solutions to the simplified Ericksen-Leslie system for both uniaxial and biaxial nematics, and the convergence of weak solutions of the Ginzburg-Landau type nematic liquid crystal flow to a weak solution of the simplified Ericksen-Leslie system as the parameter tends to zero. This is based on the compensated compactness property of the Ericksen stress tensors, which is obtained by the $L^p$-estimate of the Hopf differential for the Ericksen-Leslie system and the Pohozaev type argument for the Ginzburg-Landau type nematic liquid crystal flow.

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