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The planar problem of a viscous laminar flow around elliptical cylinders under angle of attack is considered. From the solution of the laminar boundary layer equations using the Loytsyansky local similarity method, the shear stress at the…

流体动力学 · 物理学 2021-06-29 Alexander G. Petrov , Artem D. Sukhov

We present a phenomenological fluid dynamics model for a dilatant fluid, i.e. a severe shear thickening fluid, by introducing a state variable. The Navier-Stokes equation is coupled with the state variable field, which evolves in response…

软凝聚态物质 · 物理学 2010-10-26 Hiizu Nakanishi , Namiko Mitarai

We derive and analyze a new diffuse interface model for incompressible, viscous fluid mixtures with bulk-surface interaction. Our system consists of a Navier--Stokes--Cahn--Hilliard model in the bulk that is coupled to a surface…

偏微分方程分析 · 数学 2025-09-16 Patrik Knopf , Jonas Stange

A finite-volume method for the steady, compressible, reacting, turbulent Navier-Stokes equations is developed by using a steady-state preserving splitting scheme for the stiff source terms in chemical reaction. Laminar and turbulent…

流体动力学 · 物理学 2026-03-31 Yalu Zhu , Feng Liu , William A. Sirignano

The coupled Cahn-Hilliard and Navier-Stokes (CH-NS) equations provide a powerful framework for modeling multiphase flows with diffuse interfaces, enabling simulations of droplet breakup, bubble dynamics, and hydrodynamic instabilities.…

软凝聚态物质 · 物理学 2025-09-03 Sukriti Manna , Constantine M Megaridis , Subramanian KRS Sankaranarayanan

On its way to turbulence, plane Couette flow - the flow between counter-translating parallel plates - displays a puzzling steady oblique laminar-turbulent pattern. We approach this problem via Galerkin modelling of the Navier-Stokes…

流体动力学 · 物理学 2015-06-11 K. Seshasayanan , P. Manneville

Respecting the laws of thermodynamics is crucial for ensuring that numerical simulations of dynamical systems deliver physically relevant results. In this paper, we construct a structure-preserving and thermodynamically consistent finite…

数值分析 · 数学 2024-09-23 Evan S. Gawlik , François Gay-Balmaz

The objective of this paper is to unravel any relations that may exist between turbulent shear flows and statistical mechanics, through a detailed numerical investigation in the simplest case where both can be well defined. The shear flow…

流体动力学 · 物理学 2013-01-01 Saikishan Suryanarayanan , Roddam Narasimha , N. D. Hari Dass

I review the recent progress in measuring elliptic flow in heavy ion collisions. These measurements show clearly how hydrodynamics starts to develop as the system size is increased from peripheral to central collisions. During this…

核理论 · 物理学 2009-11-18 Derek Teaney

The asymmetry model for the highly viscous flow postulates thermally activated jumps from a practically undistorted ground state to strongly distorted, but stable structures, with a pronounced Eshelby backstress from the distorted…

软凝聚态物质 · 物理学 2011-10-25 U. Buchenau

A Cahn-Hilliard-Navier-Stokes system for two-phase flow on an evolving surface with non-matched densities is derived using methods from rational thermodynamics. For a Cahn-Hilliard energy with a singular (logarithmic) potential short time…

偏微分方程分析 · 数学 2025-11-18 Helmut Abels , Harald Garcke , Andrea Poiatti

The thermodynamic model of ultrathin lubricant film melting, confined between two atomically-flat solid surfaces, is built using the Landau phase transition approach. Non-equilibrium entropy is introduced describing the part of thermal…

统计力学 · 物理学 2015-03-13 L. S. Metlov , A. V. Khomenko , I. A. Lyashenko

A shear flow of particles in a laser-driven two-dimensional (2D) dusty plasma are observed in a further study of viscous heating and thermal conduction. Video imaging and particle tracking yields particle velocity data, which we convert…

等离子体物理 · 物理学 2015-06-11 Yan Feng , J. Goree , Bin Liu

In this paper, we develop a phase-field model for binary incompressible (quasi-incompressible) fluid with thermocapillary effects, which allows for the different properties (densities, viscosities and heat conductivities) of each component…

流体动力学 · 物理学 2015-06-18 Zhenlin Guo , Ping Lin

We develop numerical multiscale methods for viscous boundary layer flow. The goal is to derive effective boundary conditions, or wall laws, through high resolution simulations localized to the boundary coupled to a coarser simulation in the…

数值分析 · 数学 2021-10-14 Sean Carney , Björn Engquist

A type-I model of non-isothermal multicomponent systems of gases describing mass diffusive and heat conductive phenomena is presented. The derivation of the model and a convergence result among thermomechanical theories in the smooth regime…

偏微分方程分析 · 数学 2023-01-24 Stefanos Georgiadis , Ansgar Jüngel , Athanasios Tzavaras

Advanced measurement techniques and high performance computing have made large data sets available for a wide range of turbulent flows that arise in engineering applications. Drawing on this abundance of data, dynamical models can be…

流体动力学 · 物理学 2020-05-06 Armin Zare , Tryphon T. Georgiou , Mihailo R. Jovanović

Based on Brownian dynamics simulations, we investigate the thermodynamic signatures of non-equilibrium steady states in a confined colloidal suspensions under shear flow. Specifically, we consider a thin film consisting of charged particles…

软凝聚态物质 · 物理学 2019-01-02 Sascha Gerloff , Sabine H. L. Klapp

Turbulent-laminar patterns are ubiquitous near transition in wall-bounded shear flows. Despite recent progress in describing their dynamics in analogy to non-equilibrium phase transitions, there is no theory explaining their emergence.…

流体动力学 · 物理学 2016-08-16 Paul Ritter , Fernando Mellibovsky , Marc Avila

A hydrodynamic description for inelastic Maxwell mixtures driven by a stochastic bath with friction is derived. Contrary to previous works where constitutive relations for the fluxes were restricted to states near the homogeneous steady…

统计力学 · 物理学 2020-06-17 Nagi Khalil , Vicente Garzó