𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Stabilization of explicit methods for convection diffusion equations by discrete mollification

✍ Scribed by Carlos D. Acosta; Carlos E. Mejía


Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
543 KB
Volume
55
Category
Article
ISSN
0898-1221

No coin nor oath required. For personal study only.

✦ Synopsis


The main goal of this paper is to show that discrete mollification is a simple and effective way to speed up explicit time-stepping schemes for partial differential equations. The second objective is to enhance the mollification method with a variety of alternatives for the treatment of boundary conditions. The numerical experiments indicate that stabilization by mollification is a technique that works well for a variety of explicit schemes applied to linear and nonlinear differential equations.


📜 SIMILAR VOLUMES


A mollification based operator splitting
✍ Carlos D. Acosta; Carlos E. Mejía 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 844 KB

The main goal of this paper is to show that discrete mollification is a suitable ingredient in operator splitting methods for the numerical solution of nonlinear convection-diffusion equations. In order to achieve this goal, we substitute the second step of the operator splitting method of Karlsen a

Analysis of explicit difference methods
✍ J. L. Siemieniuch; I. Gladwell 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 850 KB

## Abstract We consider the numerical solution of a model one‐dimensional diffusion‐convection equation by a variety of explicit finite difference methods including conventional central and upwind replacements of the convection terms. We discuss commonly observed phenomena such as instability, unwa

Monotone difference schemes stabilized b
✍ Carlos D. Acosta; Raimund Bürger; Carlos E. Mejía 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 360 KB

## Abstract The discrete mollification method is a convolution‐based filtering procedure suitable for the regularization of ill‐posed problems and for the stabilization of explicit schemes for the solution of PDEs. This method is applied to the discretization of the diffusive terms of a known first