Results 51 to 60 of about 22,003 (145)

A STABILIZING SUBGRID FOR CONVECTION–DIFFUSION PROBLEM [PDF]

open access: yesMathematical Models and Methods in Applied Sciences, 2006
A stabilizing subgrid which consists of a single additional node in each triangular element is analyzed by solving the convection–diffusion problem, especially in the case of small diffusion. The choice of the location of the subgrid node is based on minimizing the residual of a local problem inside each element. We study convergence properties of the
openaire   +2 more sources

The Dual Characteristic-Galerkin Method

open access: yesComptes Rendus. Mathématique
The Dual Characteristic-Galerkin method (DCGM) is conservative, precise and experimentally positive. We present the method and prove convergence and $L^2$-stability in the case of Neumann boundary conditions. In a 2D numerical finite element setting (FEM)
Hecht, Frédéric, Pironneau, Olivier
doaj   +1 more source

Convergence of Convective–Diffusive Lattice Boltzmann Methods

open access: yesSIAM Journal on Numerical Analysis, 1995
Lattice Boltzmann methods are numerical schemes derived as a kinetic approximation of an underlying lattice gas. A numerical convergence theory for nonlinear convective-diffusive lattice Boltzmann methods is established. Convergence, consistency, and stability are defined through truncated Hilbert expansions.
Elton, Bracy H.   +2 more
openaire   +3 more sources

NUMERICAL ANALYSIS OF AN INVERSE PROBLEM ORIGINATED IN PHENOMENON OF POLLUTION AIR URBAN

open access: yesSelecciones Matemáticas, 2016
This paper presents the calibration study of a two - dimensional mathematical model for the problem of urban air pollution. It is mainly assumed that air pollution is afected by wind convection, diffusion and chemical reactions of pollutants ...
Aníbal Coronel, Ian Hess
doaj   +1 more source

Multiscale Stochastic Homogenization of Convection-Diffusion Equations [PDF]

open access: yesApplications of Mathematics, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

A Weighted Average Finite Difference Method for the Fractional Convection-Diffusion Equation

open access: yesAdvances in Mathematical Physics, 2013
A weighted average finite difference method for solving the two-sided space-fractional convection-diffusion equation is given, which is an extension of the weighted average method for ordinary convection-diffusion equations.
Lijuan Su, Pei Cheng
doaj   +1 more source

Topology Optimization of Passive Micromixers Based on Lagrangian Mapping Method

open access: yesMicromachines, 2018
This paper presents an optimization-based design method of passive micromixers for immiscible fluids, which means that the Peclet number infinitely large.
Yuchen Guo   +3 more
doaj   +1 more source

Quantitative Study of Non-Linear Convection Diffusion Equations for a Rotating-Disc Electrode. [PDF]

open access: yesEntropy (Basel), 2023
Alshammari FS   +4 more
europepmc   +1 more source

Convection–diffusion equations with random initial conditions [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2019
We consider an evolution equation generalising the viscous Burgers equation supplemented by an initial condition which is a homogeneous random field. We develop a non-linear framework enabling us to show the existence and regularity of solutions as well as their long time behaviour.
openaire   +2 more sources

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