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A complex non-Newtonian fluid models the nematic liquid crystal flows confined in a bounded domain in $\mathbb{R}^3$ is considered. The system is a forced incompressible Navier-Stokes equation coupled with a parabolic type Q-tensor flows.…

Analysis of PDEs · Mathematics 2017-01-17 Yao Xiao

We consider a full Navier-Stokes and $Q$-tensor system for incompressible liquid crystal flows of nematic type. In the two dimensional periodic case, we prove the existence and uniqueness of global strong solutions that are uniformly…

Analysis of PDEs · Mathematics 2023-07-28 Cecilia Cavaterra , Elisabetta Rocca , Hao Wu , Xiang Xu

Existence and uniqueness of local strong solution for the Beris--Edwards model for nematic liquid crystals, which couples the Navier-Stokes equations with an evolution equation for the Q-tensor, is established on a bounded domain in the…

Analysis of PDEs · Mathematics 2013-12-24 Helmut Abels , Georg Dolzmann , YuNing Liu

We prove short-time well-posedness and existence of global weak solutions of the Beris--Edwards model for nematic liquid crystals in the case of a bounded domain with inhomogeneous mixed Dirichlet and Neumann boundary conditions. The system…

Analysis of PDEs · Mathematics 2013-11-15 Helmut Abels , Georg Dolzmann , YuNing Liu

We are interested in studying a system coupling the compressible Navier-Stokes equations with an elastic structure located at the boundary of the fluid domain. Initially the fluid domain is rectangular and the beam is located on the upper…

Analysis of PDEs · Mathematics 2018-08-22 Sourav Mitra

In this paper, we consider the Beris-Edwards system for incompressible nematic liquid crystal flows. The system under investigation consists of the Navier-Stokes equations for the fluid velocity $\mathbf{u}$ coupled with an evolution…

Analysis of PDEs · Mathematics 2024-08-21 Yuning Liu , Hao Wu , Xiang Xu

In this paper we investigate a forced incompressible Navier-Stokes equation coupled with a parabolic type equation of Q-tensors in a domain $U\subset\R^3.$ In the case $U$ is bounded, we prove the existence of a global strong solution when…

Analysis of PDEs · Mathematics 2025-05-19 Z. Chen , E. Terraneo

In this paper, we consider a simplified Ericksen-Leslie model for the nematic liquid crystal flow. The evolution system consists of the Navier-Stokes equations coupled with a convective Ginzburg-Landau type equation for the averaged…

Analysis of PDEs · Mathematics 2013-05-07 Maurizio Grasselli , Hao Wu

In this paper, we consider a complex fluid modeling nematic liquid crystal flows, which is described by a system coupling Navier-Stokes equations with a parabolic Q-tensor system. We first prove the global existence of weak solutions in…

Analysis of PDEs · Mathematics 2023-07-19 Jinrui Huang , Shijin Ding

We study a nonlinear coupled fluid-structure system modelling the blood flow through arteries. The fluid is described by the incompressible Navier-Stokes equations in a 2D rectangular domain where the upper part depends on a structure…

Analysis of PDEs · Mathematics 2018-06-26 Jean-Jérôme Casanova

In this paper we study a gradient flow generated by the Landau-de Gennes free energy that describes nematic liquid crystal configurations in the space of $Q$-tensors. This free energy density functional is composed of three quadratic terms…

Analysis of PDEs · Mathematics 2021-04-05 Yuning Liu , Xinyang Lu , Xiang Xu

We consider here the simplified Ericksen-Leslie system on the whole three-dimensional space. This system deals with the incompressible Navier-Stokes equations strongly coupled with a harmonic map flow which models the dynamical behavior for…

Analysis of PDEs · Mathematics 2021-07-21 Oscar Jarrin

This paper is concerned with the free boundary problem for the Navier Stokes equations without surface tension in the $L_p$ in time and $L_q$ in space setting with $2 < p < \infty$ and $N < q < \infty$. A local in time existence theorem is…

Analysis of PDEs · Mathematics 2015-01-12 Yoshihiro Shibata

This paper introduces a comprehensive finite element approximation framework for three-dimensional Landau-de Gennes $Q$-tensor energies for nematic liquid crystals, with a particular focus on the anisotropy of the elastic energy and the…

Numerical Analysis · Mathematics 2025-06-06 Heiko Gimperlein , Ruma R. Maity

In this paper, we consider the Q-tensor model of nematic liquid crystals, which couples the Navier-Stokes equations with a parabolic-type equation describing the evolution of the directions of the anisotropic molecules, in the half-space.…

Analysis of PDEs · Mathematics 2025-11-07 Daniele Barbera , Miho Murata , Yoshihiro Shibata

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…

Fluid Dynamics · Physics 2023-10-06 Lucas Bouck , Ricardo H. Nochetto , Vladimir Yushutin

We study a simplified Ericksen-Leslie system modeling the flow of nematic liquid crystals with partially free boundary conditions. It is a coupled system between the Navier-Stokes equation for the fluid velocity with a transported heat flow…

Analysis of PDEs · Mathematics 2023-03-22 Fanghua Lin , Yannick Sire , Juncheng Wei , Yifu Zhou

We study a complex non-newtonian fluid that models the flow of nematic liquid crystals. The fluid is described by a system that couples a forced Navier-Stokes system with a parabolic-type system. We prove the existence of global weak…

Analysis of PDEs · Mathematics 2015-05-14 Marius Paicu , Arghir Zarnescu

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…

Analysis of PDEs · Mathematics 2013-07-30 Dehua Wang , Xiang Xu , Cheng Yu

The steady motion of a viscous incompressible fluid in distorted pipes, of finite length, is modeled through the Navier-Stokes equations with mixed boundary conditions: the inflow is given by an arbitrary member of the Lions-Magenes class…

Analysis of PDEs · Mathematics 2025-06-10 Alessio Falocchi , Ana Leonor Silvestre , Gianmarco Sperone
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