Results 11 to 20 of about 216,818 (306)
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
A. Nesliturk, A. Nesliturk
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Supercloseness of the local discontinuous Galerkin method for a singularly perturbed convection-diffusion problem [PDF]
Mathematics of Computation, 2022 A singularly perturbed convection-diffusion problem posed on the unit square in $\mathbb{R}^2$, whose solution has exponential boundary layers, is solved numerically using the local discontinuous Galerkin (LDG) method with piecewise polynomials of degree
Yao Cheng, Shan Jiang, M. Stynes
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Numerical analysis of a singularly perturbed convection diffusion problem with shift in space [PDF]
Applied Numerical Mathematics, 2022 We consider a singularly perturbed convection-diffusion problem that has in addition a shift term. We show a solution decomposition using asymptotic expansions and a stability result.
M. Brdar, S. Franz, L. Ludwig, H. Roos
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Mathematics, 2020 In this paper, we have considered a numerical difference approximation for solving two-dimensional Riesz space fractional convection-diffusion problem with source term over a finite domain. The convection and diffusion equation can depend on both spatial
Eyaya Fekadie Anley, Zhoushun Zheng
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Mathematics, 2023 In order to obtain the numerical results of 3D convection-diffusion-reaction problems with variable coefficients efficiently, we select the improved element-free Galerkin (IEFG) method instead of the traditional element-free Galerkin (EFG) method by ...
Heng Cheng, Zebin Xing, Yan Liu
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Space–Time Radial Basis Function–Based Meshless Approach for Solving Convection–Diffusion Equations
Mathematics, 2020 This article proposes a space–time meshless approach based on the transient radial polynomial series function (TRPSF) for solving convection–diffusion equations.
Cheng-Yu Ku, Jing-En Xiao, Chih-Yu Liu
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NUMERICAL ANALYSIS OF AN INVERSE PROBLEM ORIGINATED IN PHENOMENON OF POLLUTION AIR URBAN
Selecciones 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
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Residual based a posteriori error estimation for Dirichlet boundary control problems [PDF]
ESAIM: Proceedings and Surveys, 2021 We study a residual–based a posteriori error estimate for the solution of Dirichlet boundary control problem governed by a convection diffusion equation on a two dimensional convex polygonal domain, using the local discontinuous Galerkin (LDG) method ...
Yücel Hamdullah
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An Adaptive Multigrid Strategy for Convection-Diffusion Problems [PDF]
, 2006 *Abstract. *For the solution of convection-diffusion problems we presenta multilevel self-adaptive mesh-refinement algorithm to resolve locallystrong varying behavior, like boundary and interior layers. The methodis based on discontinuous Galerkin (Baumann-Oden DG) discretization.The recursive mesh-adaptation is interwoven with the multigrid solver.The
Daniela Vasileva +2 more
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Dead Cores in a Convection-Diffusion Problem
Journal of Mathematical Analysis and Applications, 1994 A model for fiber spinning is considered. It involves the compressible gas flow through a cylindrical multifilament bundle of parallel fibers. The volume occupied by the bundle is modelled as a porous medium with anisotropic permeability, and the flow is governed by Darcy's law.
Vanderhout, R. +3 more
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