Diffusion equation - Open Access .click

Results 21 to 30 of about 6,032 (69)

P-Fuzzy Diffusion Equation Using Rules Base

Journal of Applied Mathematics, 2014
We propose a fuzzy system that simulates dispersion of individuals whose movements are described by diffusion. We will use only the position of the population as an input variable for describing the process.
Jefferson Leite +3 more
doaj +1 more source

Parameters identification for a nonlinear partial differential equation in image denoising

Moroccan Journal of Pure and Applied Analysis, 2023
In this work and in the context of PDE constrained optimization problems, we are interested in identification of a parameter in the diffusion equation proposed in [1]. We propose to identify this parameter automatically by a gradient descent algorithm to
Mourabit A. El
doaj +1 more source

Analytical Investigations into Anomalous Diffusion Driven by Stress Redistribution Events: Consequences of Lévy Flights

Mathematics, 2022
This research is concerned with developing a generalised diffusion equation capable of describing diffusion processes driven by underlying stress-redistributing type events.
Josiah D. Cleland, Martin A. K. Williams
doaj +1 more source

Systematic Investigation of the Physical and Electrochemical Characteristics of the Vanadium (III) Acidic Electrolyte With Different Concentrations and Related Diffusion Kinetics

Frontiers in Chemistry, 2020
Owing to the lack of systematic kinetic theory about the redox reaction of V(III)/V(II), the poor electrochemical performance of the negative process in vanadium flow batteries limits the overall battery performance to a great extent.
Minghua Jing +9 more
doaj +1 more source

Method of approximations for the convection-dominated anomalous diffusion equation in a rectangular plate using high-resolution compact discretization

MethodsX, 2022
The present method describes the high-resolution compact discretization method for the numerical solution of the nonlinear fractal convection-diffusion model on a rectangular plate by employing the Hausdorff distance metric.
Navnit Jha, Shikha Verma
doaj +1 more source

The generalized Airy diffusion equation

Electronic Journal of Differential Equations, 2003
Solutions of a generalized Airy diffusion equation and an associated nonlinear partial differential equation are obtained. Trigonometric type functions are derived for a third order generalized radial Euler type operator.
Frank M. Cholewinski, James A. Reneke
doaj

Diffusion Convection Equation with Variable Nonlinearities

Journal of Function Spaces, 2017
The paper studies diffusion convection equation with variable nonlinearities and degeneracy on the boundary. Unlike the usual Dirichlet boundary value, only a partial boundary value condition is imposed.
Huashui Zhan
doaj +1 more source

On Fuzzy Solutions for Diffusion Equation

Journal of Applied Mathematics, 2015
Our main goal is to define a fuzzy solution for problems involving diffusion. To this end, the solution of fuzzy diffusion-reaction-advection equation will be defined as Zadeh’s extension of deterministic solution of the associated problem.
Jefferson Leite +3 more
doaj +1 more source

Diffusion equation for composite materials

Electronic Journal of Differential Equations, 2000
In this article, we study the asymptotic behavior of solutions to the diffusion equation with non-homogeneous Neumann boundary conditions. This equation models a composite material that occupies a perforated domain, in ${mathbb R}^N$, with small holes ...
Mohamed El Hajji
doaj

Lattice Boltzmann Simulation of Spatial Fractional Convection–Diffusion Equation

Entropy
The space fractional advection–diffusion equation is a crucial type of fractional partial differential equation, widely used for its ability to more accurately describe natural phenomena. Due to the complexity of analytical approaches, this paper focuses
Xiaohua Bi, Huimin Wang
doaj +1 more source

mathematics