نتایج جستجو برای: hydrodynamic theory

تعداد نتایج: 804101  

2015
José A. Fornés J. A. Fornés

We use the Brownian dynamics with hydrodynamic interactions simulation in order to describe the movement of an elastically coupled dimer Brownian motor in a ratchet potential. The only external forces considered in our system were the load, the random thermal noise and an unbiased thermal fluctuation. We observe differences in the dynamic behaviour if hydrodynamic interactions are considered as...

2012
S. KOKOU DADZIE S. K. Dadzie

Chapman-Enskog expansion is the orthodox approach to derive continuum flow models from Boltzmann’s kinetic equation for dilute gases. Beyond the Navier-Stokes-Fourier order, these models known as Burnett hydrodynamic-regime equations violate a number of fundamental mechanical and thermodynamic principles in their original forms. This has generated a widely investigated problem in the kinetic th...

2009
Ram Brustein

The near-horizon metric for a black brane in Anti-de Sitter (AdS) space and the metric near the AdS boundary both exhibit hydrodynamic behavior. We demonstrate the equivalence of this pair of hydrodynamic systems for the sound mode of a conformal theory. This is first established for Einstein’s gravity, but we then show how the sound damping constant will be modified, from its Einstein form, fo...

2002
Nicolas G. Hadjiconstantinou Alejandro L. Garcia Martin Z. Bazant Gang He

We present predictions for the statistical error due to finite sampling in the presence of thermal fluctuations in molecular simulation algorithms. Specifically, we present predictions for the error dependence on hydrodynamic parameters and the number of samples taken. Expressions for the common hydrodynamic variables of interest such as flow velocity, temperature, density, pressure, shear stre...

2008
Masakiyo Kitazawa Masayuki Asakawa Berndt Müller Chiho Nonaka

A method to measure the transport coefficients on the lattice is proposed. We introduce a spatiallyinhomogeneous momentum source to the Hamiltonian in order to generate a non-equilibrium but steady hydrodynamic flow. Once such hydrodynamic flow is created with appropriate spatial geometries, the transport coefficients are determined from expectation values of the energymomentum tensor. A Monte ...

2000
O. I. Mokhov

In this paper, notions of compatible and almost compatible Riemannian and pseudo-Riemannian metrics, which are motivated by the theory of compatible (local and nonlocal) Poisson structures of hydrodynamic type and generalize the notion of flat pencil of metrics (this notion plays an important role in the theory of integrable systems of hydrodynamic type and the Dubrovin theory of Frobenius mani...

2016
T. Carlsson

2014 The nature of the flow alignment of nematic liquid crystals is discussed within the hydrodynamic theory of Leslie, Ericksen and Parodi. It is shown that there is a limited range of angles for which flow alignment can occur. With this as a starting point the flow alignment of disc like nematics is discussed. It is proved that only one out of the two models of flow alignment recently discuss...

2008
J. A. CARRILLO M. R. D’ORSOGNA V. PANFEROV

We present a kinetic theory for swarming systems of interacting, self-propelled discrete particles. Starting from the Liouville equation for the many-body problem we derive a kinetic equation for the single particle probability distribution function and the related macroscopic hydrodynamic equations. General solutions include flocks of constant density and fixed velocity and other non-trivial m...

Journal: :Physical review letters 2006
Adolfo J Banchio Jacek Gapinski Adam Patkowski Wolfgang Häussler Andrei Fluerasu Stefano Sacanna Peter Holmqvist Gerhard Meier M Paul Lettinga Gerhard Nägele

In this joint experimental-theoretical work we study hydrodynamic interaction effects in dense suspensions of charged colloidal spheres. Using x-ray photon correlation spectroscopy we have determined the hydrodynamic function H(q), for a varying range of electrosteric repulsion. We show that H(q) can be quantitatively described by means of a novel Stokesian dynamics simulation method for charge...

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