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The relativistic hydrodynamic model is applied to describe the expansion of the dense matter formed in relativistic heavy-ion collisions. The hydrodynamic expansion of the fluid, supplemented with the statistical emission of hadrons at…

核理论 · 物理学 2012-03-27 Piotr Bozek

The generalized transport equations for a consistent description of kinetic and hydrodynamic processes in dense gases and liquids are considered. The inner structure of the generalized transport kernels for these equations is established.…

统计力学 · 物理学 2015-06-16 B. Markiv , I. Omelyan , M. Tokarchuk

Starting from a dynamic tensor model about two second-order tensors, we derive the frame hydrodynamics for the biaxial nematic phase using the Hilbert expansion. The coefficients in the frame model are derived from those in the tensor…

软凝聚态物质 · 物理学 2022-07-01 Sirui Li , Jie Xu

In this paper we consider a coupled hydrodynamical system which involves the Navier-Stokes equations for the velocity field and kinematic transport equations for the molecular orientation field. By applying the Chemin-Lerner's time-space…

偏微分方程分析 · 数学 2011-04-22 Jihong Zhao , Qiao Liu , Shangbin Cui

This paper investigates the long time dynamics of interacting particle systems subject to singular interactions. We consider a microscopic system of $N$ interacting point particles, where the time evolution of the joint distribution…

偏微分方程分析 · 数学 2024-12-10 Alexis Béjar-López , Alain Blaustein , Pierre-Emmanuel Jabin , Juan Soler

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…

偏微分方程分析 · 数学 2023-07-28 Cecilia Cavaterra , Elisabetta Rocca , Hao Wu , Xiang Xu

Nematic liquid crystals exhibit both crystal-like and fluid-like features. In particular, the propagation of an acoustic wave shows an unexpected occurrence of some of the solid-like features at the hydrodynamic level, namely, the…

软凝聚态物质 · 物理学 2017-01-04 Stefano S. Turzi

Present work is a theoretical study on the stability of the thermotropic biaxial nematic liquid crystal phase in model systems. Its main aim is to present the phase diagrams of spatially uniform liquid mesophases and to identify the…

软凝聚态物质 · 物理学 2009-07-07 Piotr Grzybowski

In this paper the two-dimensional Benney system describing long wave propagation of a finite depth fluid motion and the multi-dimensional Russo--Smereka kinetic equation describing a bubbly flow are considered. The Hamiltonian approach…

可精确求解与可积系统 · 物理学 2015-06-19 Maxim V. Pavlov

Obtaining rigorous and general results about the non-equilibrium dynamics of extended many-body systems is a difficult task. In quantum lattice models with short-range interactions, the Lieb-Robinson bound tells us that the spatial extent…

统计力学 · 物理学 2023-06-07 Dimitrios Ampelogiannis , Benjamin Doyon

Accurate simulations of ice sheet dynamics, mantle convection, lava flow, and other highly viscous free-surface flows involve solving the coupled Stokes/free-surface equations. In this paper, we theoretically analyze the stability and…

数值分析 · 数学 2025-06-13 Igor Tominec , Lukas Lundgren , André Löfgren , Josefin Ahlkrona

We analyze the transport properties of a low density ensemble of identical macroscopic particles immersed in an active fluid. The particles are modeled as inelastic hard spheres (granular gas). The non-homogeneous active fluid is modeled by…

软凝聚态物质 · 物理学 2017-10-17 Francisco Vega Reyes , Antonio Lasanta

Liquid crystal elastomers are special cross-linked polymer materials combining the large elastic deformability of elastomers with the orientational orders of liquid crystals. This model exhibits markedly different phenomena than the liquid…

偏微分方程分析 · 数学 2023-07-18 Xiaonan Hao , Jiaxi Huang , Ning Jiang

An overview is presented of several diverse branches of work in the area of effectively 2D fluid equilibria which have in common that they are constrained by an infinite number of conservation laws. Broad concepts, and the enormous variety…

流体动力学 · 物理学 2022-12-27 Peter B. Weichman , J. B. Marston

We study the hydrodynamics of compressible flows of active liquid crystals in the Beris-Edwards hydrodynamics framework, using the Landau-de Gennes $Q$-tensor order parameter to describe liquid crystalline ordering. We prove the existence…

偏微分方程分析 · 数学 2017-11-15 Gui-Qiang G. Chen , Apala Majumdar , Dehua Wang , Rongfang Zhang

We study the large-time behavior of finite-energy weak solutions for the Vlasov-Navier-Stokes equations in a two-dimensional torus. We focus first on the homogeneous case where the ambient (incompressible and viscous) fluid carrying the…

偏微分方程分析 · 数学 2025-12-02 Raphaël Danchin , Ling-Yun Shou

This article is the first in a series of papers on the analysis of a basic model for fluid vesicle dynamics. There are two variants of this model, a parabolic one decribing purely relaxational dynamics and a non-parabolic one containing the…

偏微分方程分析 · 数学 2015-12-16 Daniel Lengeler

We study the kinetics of the nematic-isotropic transition in a two-dimensional liquid crystal by using a lattice Boltzmann scheme that couples the tensor order parameter and the flow consistently. Unlike in previous studies, we find the…

软凝聚态物质 · 物理学 2009-11-07 Colin Denniston , Enzo Orlandini , J. M. Yeomans

In this paper, we prove the global existence and singularity formation for a wave system from modelling nematic liquid crystals in one space dimension. In our model, although the viscous damping term is included, the solution with smooth…

偏微分方程分析 · 数学 2012-07-24 Geng Chen , Yuxi Zheng

A simple general theorem is used as a tool that generates nonlocal constants of motion for Lagrangian systems. We review some cases where the constants that we find are useful in the study of the systems: the homogeneous potentials of…

动力系统 · 数学 2020-09-28 Gianluca Gorni , Gaetano Zampieri