Skip to content

Cellular Automata and Lattice Gases papers — page 3

comp-gasBrowse archive

Detecting Nonlinearity in Pressure Data Inside the Draft Tube of a Real Francis Turbine
A general method for testing nonlinearity in time series is described and applied to measurements of different pressure data inside the draft tube surge of a real Francis turbine. Comparing the…
S. SelloSep 11, 1995
Learn
CAM-8: A Computer Architecture Based on Cellular Automata
Conventional computers are ill suited to run CA models, and so discourage their development. By creating a hardware platform that makes a broad range of new CA algorithms practical for real…
Norman MargolusSep 4, 1995
Learn
A non-slip boundary condition for lattice Boltzmann simulations
A non-slip boundary condition at a wall for the lattice Boltzmann method is presented. In the present method unknown distribution functions at the wall are assumed to be an equilibrium distribution…
Takaji Inamuro, Masato Yoshino, Fumimaru OginoAug 24, 1995
Learn
On pressure and velocity flow boundary conditions for the lattice Boltzmann BGK model
Pressure (density) and velocity boundary conditions inside a flow domain are studied for 2-D and 3-D lattice Boltzmann BGK models (LBGK) and new method to specify these conditions are proposed. These…
Qisu Zou, Xiaoyi HeAug 8, 1995
Learn
Detecting nonlinearity in multivariate time series
We propose an extension to time series with several simultaneously measured variables of the nonlinearity test, which combines the redundancy -- linear redundancy approach with the surrogate data…
Milan PalušJul 31, 1995
Learn
Estimating Predictability: Redundancy and Surrogate Data Method
A method for estimating theoretical predictability of time series is presented, based on information-theoretic functionals---redundancies and surrogate data technique. The redundancy, designed for a…
M. Paluš, L. Pecen, D. PivkaJul 31, 1995
Learn
Analysis and boundary condition of the lattice Boltzmann BGK model with two velocity components
In this paper, we study the two dimensional lattice Boltzmann BGK model (LBGK) by analytically solving a simple flow in a 2~-D channel. The flow is driven by the movement of upper boundary with…
Xiaoyi He, Qisu ZouJul 22, 1995
Learn
A Lattice-Gas Model of Microemulsions
We develop a lattice gas model for the nonequilibrium dynamics of microemulsions. Our model is based on the immiscible lattice gas of Rothman and Keller, which we reformulate using a microscopic,…
Bruce M. Boghosian, Peter V. Coveney, Andrew N. EmertonJul 11, 1995
Learn
SAMPLING ALMOST PERIODIC FUNCTIONS WITH RANDOM PROBES OF FINITE DENSITY
We consider the problem of reconstructing a function given its values on a set of points with finite density. We prove that with probability one, the values of an almost periodic function on a random…
P. ColletJun 15, 1995
Learn
Predicting and characterizing data sequences from structure-variable systems
In principle, all the natural systems such as biological, ecological and economical systems are structure-variable systems (in which some environment parameters are not fixed). In this Letter we show…
H. P. Fangi, L. Y. CaoJun 1, 1995
Learn
On reconstruction of chaotic attractor from time series represented as "clusters"
The method of reconstruction of an attractor from a set of short time series ( clusters) is proposed and discussed. This method is most useful for correlation dimension estimation of…
A. A. Kipchatov, L. V. KrasichkovMay 24, 1995
Learn
Lattice Boltzmann Model For Magnetic Fluids
A lattice Boltzmann model with interacting particles was developed in order to simulate the magneto-rheological characteristics of magnetic fluids. In the frame of this model, 6\, +\,1 species of…
Victor SofoneaMay 5, 1995
Learn
Lattice gas with ``interaction potential''
We present an extension of a simple automaton model to incorporate non-local interactions extending over a spatial range in lattice gases. From the viewpoint of Statistical Mechanics, the lattice…
Olivier Tribel, Jean Pierre BoonMar 10, 1995
Learn
Multi-component lattice-Boltzmann model with interparticle interaction
A previously proposed [X. Shan and H. Chen, Phys. Rev. E 47, 1815, (1993)] lattice Boltzmann model for simulating fluids with multiple components and interparticle forces is described in…
Xiaowen Shan, Gary DoolenMar 7, 1995
Learn
Cellular automaton model of precipitation/dissolution coupled with solute transport
Precipitation/dissolution reactions coupled with solute transport are modelled as a cellular automaton in which solute molecules perform a random walk on a regular lattice and react according to a…
T. KarapiperisMar 2, 1995
Learn
Lattice Boltzmann Approach to Viscous Flows Between Parallel Plates
Four different kinds of laminar flows between two parallel plates are investigated using the Lattice Boltzmann Method (LBM). The LBM accuracy is estimated in two cases using numerical fits of the…
Bela Szilagyi, Romeo Susan -- Resiga, Victor SofoneaFeb 17, 1995
Learn
Lattice Boltzmann Simulation of Non-Ideal Fluids
A lattice Boltzmann scheme able to model the hydrodynamics of phase separation and two-phase flow is described. Thermodynamic consistency is ensured by introducing a non-ideal pressure tensor…
Michael R. Swift, W. R. Osborn, J. M. YeomansFeb 16, 1995
Learn
Nonlinear stability analysis of plane Poiseuille flow by normal forms
In the subcritical interval of the Reynolds number 4320≤ R≤ Rc 5772, the Navier--Stokes equations of the two--dimensional plane Poiseuille flow are approximated by a 22--dimensional…
A. Rauh, T. Zachrau, J. ZollerFeb 10, 1995
Learn
An Euler Solver Based on Locally Adaptive Discrete Velocities
A new discrete-velocity model is presented to solve the three-dimensional Euler equations. The velocities in the model are of an adaptive nature---both the origin of the discrete-velocity space and…
Balu NadigaJan 23, 1995
Learn
Plane Waves in a Multispeed Discrete-Velocity Gas
A kinetic flux-splitting procedure used in conjunction with local thermodynamic equilibrium in a finite volume allows us to investigate numerically discrete-velocity gas flows. The procedure,…
Balu Nadiga GalcitJan 22, 1995
Learn
Shock structure in a nine-velocity gas
The exact structure of a shock is computed in a multiple-speed discrete-velocity gas, the nine-velocity gas, wherein the multiplicity of speeds ensures nontrivial thermodynamics. Obtained as a…
Balu Nadiga, Brad SturtevantJan 22, 1995
Learn
A Method for Near-Equilibrium Discrete-Velocity Gas Flows
We present a simulation scheme for discrete-velocity gases based on local thermodynamic equilibrium. Exploiting the kinetic nature of discrete-velocity gases, in that context, results in a…
Balu Nadiga, Dale PullinJan 22, 1995
Learn
Diffusion in Lorentz Lattice Gas Cellular Automata: the honeycomb and quasi-lattices compared with the square and triangular lattices
We study numerically the nature of the diffusion process on a honeycomb and a quasi-lattice, where a point particle, moving along the bonds of the lattice, scatters from randomly placed scatterers on…
F. Wang, E. G. D. CohenJan 14, 1995
Learn
Prandtl number of lattice Bhatnagar-Gross-Krook fluid
The lattice Bhatnagar-Gross-Krook modeled fluid has an unchangeable unit Prandtl number. A simple method is introduced in this letter to formulate a flexible Prandtl number for the modeled fluid. The…
Y. Chen, H. Ohashi, M. AkiyamaJan 13, 1995
Learn
Analytical solutions of the lattice Boltzmann BGK model
Analytical solutions of the two dimensional triangular and square lattice Boltzmann BGK models have been obtained for the plain Poiseuille flow and the plain Couette flow. The analytical solutions…
Qisu Zou, Shuling Hou, Gary D. DoolenJan 13, 1995
Learn
← PreviousPage 3Next →