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Keywords:

  • meshless;
  • mesh-free;
  • finite elements;
  • convection–diffusion;
  • transient;
  • least-squares;
  • stream-line-upwind Petrov–Galerkin

Abstract

The behaviour of high-order time stepping methods combined with mesh-free methods is studied for the transient convection–diffusion equation. Particle methods, such as the element-free Galerkin (EFG) method, allow to easily increase the order of consistency and, thus, to formulate high-order schemes in space and time. Moreover, second derivatives of the EFG shape functions can be constructed with a low extra cost and are well defined, even for linear interpolation. Thus, consistent stabilization schemes can be considered without loss in the convergence rates. Copyright © 2003 John Wiley & Sons, Ltd.