Results 61 to 70 of about 22,003 (145)

A convection–diffusion model for gang territoriality

Physica A: Statistical Mechanics and its Applications, 2018
We present an agent-based model to simulate gang territorial development motivated by graffiti marking on a two-dimensional discrete lattice. For simplicity, we assume that there are two rival gangs present, and they compete for territory. In this model, agents represent gang members and move according to a biased random walk, adding graffiti with some
Alsenafi, Abdulaziz, Barbaro, Alethea B. T.   +1 more
openaire   +2 more sources

Numerical Study on an RBF-FD Tangent Plane Based Method for Convection-Diffusion Equations on Anisotropic Evolving Surfaces. [PDF]

Entropy (Basel), 2022
Adil N, Xiao X, Feng X.
europepmc   +1 more source

New Gas Tracer Convection-Diffusion Model between Wells in Heavy Oil Reservoirs. [PDF]

ACS Omega, 2021
Du D, Zhang Y, Liu X, Zhang L, Ren L, Liu P.   +5 more
europepmc   +1 more source

Mathematical models of a diffusion-convection in porous media

Electronic Journal of Differential Equations, 2012
Mathematical models of a diffusion-convection in porous media are derived from the homogenization theory. We start with the mathematical model on the microscopic level, which consist of the Stokes system for a weakly compressible viscous liquid ...
Anvarbek M. Meirmanov, Reshat Zimin
doaj  

A Simple 1D Convection-Diffusion Model of Oxalic Acid Oxidation Using Reactive Electrochemical Membrane. [PDF]

Membranes (Basel), 2021
Skolotneva E, Cretin M, Mareev S.
europepmc   +1 more source

Convection Anisotropies of Cosmic Rays in Highly Magnetized Plasma

The Astrophysical Journal
Recently, Y. Zhang & S. Liu proposed a turbulent convection model for multiscale anisotropies of cosmic rays (CRs), with an assumption of isotropic diffusion such that the anisotropies are statistically isotropic.
Yiran Zhang, Siming Liu
doaj   +1 more source

An Obstacle Problem for Noncoercive Operators

Abstract and Applied Analysis, 2015
We study the obstacle problem for second order nonlinear equations whose model appears in the stationary diffusion-convection problem. We assume that the growth coefficient of the convection term lies in the Marcinkiewicz space weak-LN.
Luigi Greco, Gioconda Moscariello, Gabriella Zecca   +2 more
doaj   +1 more source

Exploration of wave dynamics and soliton behavior in a nonlinear 3D convection-diffusion wave equation

Results in Engineering
In this work, a two-dimensional nonlinear wave convection-diffusion equation is studied using the symmetry-based techniques, specifically Lie-symmetry approach.
Faiza Arif, F.D. Zaman, F.M. Mahomed, Adil Jhangeer   +3 more
doaj   +1 more source

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

Compact scheme with two-sided estimates for nonlinear convection-diffusion-reaction equations

Mathematics in Applied Sciences and Engineering
It is desirable that a numerical method is high-order accurate, compact, efficient and able to simulate purely convection problems. Most existing high-order methods for convection-diffusion-reaction equations (CDREs) either cannot simulate purely ...
Chinedu Nwaigwe
doaj   +1 more source