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We develop a Q-tensor model of nematic liquid crystals occupying a stationary surface which represents a fluidic material film in space. In addition to the evolution due to Landau--de\,Gennes energy the model includes a tangent viscous…

流体动力学 · 物理学 2023-10-06 Lucas Bouck , Ricardo H. Nochetto , Vladimir Yushutin

This article is concerned with the rigorous connections between the inertial Qian--Sheng model and the Ericksen--Leslie model for the liquid crystal flow, under a more general condition of coefficients. More specifically, in the framework…

偏微分方程分析 · 数学 2024-01-04 Sirui Li , Wei Wang , Qi Zeng

The goal of this work is to rigorously study the zero inertia limit for the Q-tensor model of liquid crystals. Though present in the original derivation of the Ericksen-Leslie equations for nematic liquid crystals, the inertia term of the…

数值分析 · 数学 2024-10-25 Max Hirsch , Franziska Weber , Yukun Yue

We consider a non-linear system modelling the dynamics of a linearly elastic body immersed in an incompressible viscous fluid, without damping on the elastic part. We prove local existence of strong solutions and global existence and…

偏微分方程分析 · 数学 2025-08-20 Karoline Disser , Michelle Luckas

In this paper we propose a time-splitting finite-element scheme for approximating solutions of the Ericksen-Leslie equations governing the flow of nematic liquid crystals. These equations are to be solved for a velocity vector field and a…

数值分析 · 数学 2014-03-17 R. C. Cabrales , F. Guillén-González , J. V. Gutiérrez-Santacreu

We investigate, numerically, the effects of externally imposed material flows on the structure and temporal evolution of liquid crystal skyrmions. The dynamics of a 2D system of skyrmions is modeled using the Ericksen-Leslie theory, which…

软凝聚态物质 · 物理学 2022-05-25 Rodrigo C. V. Coelho , Mykola Tasinkevych , Margarida M. Telo da Gama

We conduct a numerical study of the dynamic behavior of a dense hard sphere fluid by deriving and integrating a set of Langevin equations. The statics of the system is described by a free energy functional of the Ramakrishnan-Yussouff form.…

凝聚态物理 · 物理学 2009-10-22 Lisa M. Lust , Oriol T. Valls , Chandan Dasgupta

In this paper, we prove the local well-posedness of the Ericksen-Leslie system, and the global well-posednss for small initial data under the physical constrain condition on the Leslie coefficients, which ensures that the energy of the…

偏微分方程分析 · 数学 2015-06-11 Wei Wang , Pingwen Zhang , Zhifei Zhang

We consider the simplest one-constant model, put forward by J. Ericksen, for nematic liquid crystals with variable degree of orientation. The equilibrium state is described by a director field $\mathbf{n}$ and its degree of orientation $s$,…

数值分析 · 数学 2017-08-03 Ricardo H. Nochetto , Shawn W. Walker , Wujun Zhang

As recently proposed, the long-time behavior of equilibrium time-correlation functions for one-dimensional systems are expected to be captured by a nonlinear extension of fluctuating hydrodynamics. We outline the predictions from the theory…

统计力学 · 物理学 2014-08-05 Christian B. Mendl , Herbert Spohn

The existence of heterogeneity in the dynamics of supercooled liquids is believed to be one of the hallmarks of the glass transition. Intense research has been carried out in the past to understand the origin of this heterogeneity in…

软凝聚态物质 · 物理学 2020-07-01 Indrajit Tah , Smarajit Karmakar

A basic model for describing plasma dynamics is given by the Euler-Maxwell system, in which compressible ion and electron fluids interact with their own self-consistent electromagnetic field. In this paper we consider the "one-fluid"…

偏微分方程分析 · 数学 2017-05-24 Yu Deng , Alexandru D. Ionescu , Benoit Pausader

We perform successive umbrella sampling grand canonical Monte Carlo computer simulations of the original ST2 model of water in the vicinity of the proposed liquid-liquid critical point, at temperatures above and below the critical…

软凝聚态物质 · 物理学 2011-08-31 Sciortino Francesco , Saika-Voivod Ivan , Poole Peter

We consider here an elliptic coupled system describing the dynamics of liquid crystals flows. This system is posed on the whole n-dimensional space. We introduce first the notion of very weak solutions for this system. Then, within the…

偏微分方程分析 · 数学 2023-04-28 Oscar Jarrin

In this paper, we investigate the Cauchy problem for the compressible nematic liquid crystal flows in three-dimensional whole space. First of all, we establish the time decay rates for compressible nematic liquid crystal flows by the method…

偏微分方程分析 · 数学 2015-03-11 Jincheng Gao , Qiang Tao , Zheng-an Yao

The conventional theory of hydrodynamics describes the evolution in time of chaotic many-particle systems from local to global equilibrium. In a quantum integrable system, local equilibrium is characterized by a local generalized Gibbs…

统计力学 · 物理学 2018-02-21 Vir B. Bulchandani , Romain Vasseur , Christoph Karrasch , Joel E. Moore

We investigate the origin of the Stokes-Einstein relation in liquids. The hard-sphere dynamics is analyzed using a new measure of structural relaxation - the minimum Euclidean distance between configurations of particles. It is shown that…

软凝聚态物质 · 物理学 2007-05-23 Tomas Oppelstrup , Babak Sadigh , Srikanth Sastry , Mikhail Dzugutov

In this paper we study a mathematical model describing the movement of a colloidal particle in a fixed, bounded three dimensional container filled with a nematic liquid crystal fluid. The motion of the fluid is governed by the Beris-Edwards…

偏微分方程分析 · 数学 2023-10-26 Zhiyuan Geng , Arnab Roy , ArghirZarnescu

In this work, focusing on a critical case for shear flows of nematic liquid crystals, we investigate multiplicity and stability of stationary solutions via the parabolic Ericksen-Leslie system. We establish a one-to-one correspondence…

动力系统 · 数学 2026-04-23 Weishi Liu , Majed Sofiani

We first review the phenomenology of viscous liquids and the standard models used for explaining the non-Arrhenius average relaxation time. Then the focus is turned to the so-called elastic models, arguing that these models are all…

软凝聚态物质 · 物理学 2009-11-11 Jeppe C. Dyre