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- W2985050599 abstract "We consider the one-constant Landau - de Gennes model for nematic liquid crystals. The order parameter is a traceless tensor field $mathbf{Q}$, which is constrained to be uniaxial: $mathbf{Q} = s (mathbf{n}otimesmathbf{n} - d^{-1} mathbf{I})$ where $mathbf{n}$ is a director field, $sinmathbb{R}$ is the degree of orientation, and $dge2$ is the dimension. Building on similarities with the one-constant Ericksen energy, we propose a structure-preserving finite element method for the computation of equilibrium configurations. We prove stability and consistency of the method without regularization, and $Gamma$-convergence of the discrete energies towards the continuous one as the mesh size goes to zero. We design an alternating direction gradient flow algorithm for the solution of the discrete problems, and we show that such a scheme decreases the energy monotonically. Finally, we illustrate the method's capabilities by presenting some numerical simulations in two and three dimensions including non-orientable line fields." @default.
- W2985050599 created "2019-11-22" @default.
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- W2985050599 date "2019-11-11" @default.
- W2985050599 modified "2023-09-27" @default.
- W2985050599 title "A structure-preserving FEM for the uniaxially constrained $mathbf{Q}$-tensor model of nematic liquid crystals." @default.
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