Results 61 to 70 of about 22,621 (165)
A STABILIZING SUBGRID FOR CONVECTION–DIFFUSION PROBLEM [PDF]
Mathematical 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
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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
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Weak solutions for diffusion-convection equations
Applied Mathematics Letters, 2000 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fang, Weifu, Ito, Kazufumi
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Compact scheme with two-sided estimates for nonlinear convection-diffusion-reaction equations
Mathematics in Applied Sciences and EngineeringIt 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
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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 +1 more
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四川大学学报. 自然科学版In this paper, given additionally two observation data, the inverse problem of simultaneously inverting the convection velocity and source function of the convection diffusion equations is studied.
ZHOU Zi-Rong, YANG Liu, WANG Qing-Yan
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Analysis Based on Boundary Layer Theory of Natural Convection near Electrodes
Journal of MMIJIn an electrolysis tank where electrorefining or electrowinning is performed, differences in the local density of the electrolyte due to variations in ion concentration bring about natural convection near each electrode.
Hideaki SASAKI, Takumi TAKAICHI
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Convection Anisotropies of Cosmic Rays in Highly Magnetized Plasma
The Astrophysical JournalRecently, 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
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Computer Assisted Methods in Engineering and Science, 2023 The operator splitting algorithm has been applied in FEM analysis of fluid flow and heat transfer to improve the computational efficiency through the use of the optimum FEM models and the optimum solvers independently for convection and diffusion.
Jerzy Banaszek
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A convection-diffusion elliptic system
Rendiconti di Matematica e delle Sue Applicazioni, 2009 We study a convection-diffusion elliptic system, with Dirichlet boundary conditions. In some cases, we will prove that we have more informations (with respect to the case of a single equation) about the summability of the solutions and of their gradients, thanks to the structure of our system.
BOCCARDO, Lucio, M. ESCOBEDO
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