Second-order characteristic methods for advection-diffusion equations and comparison to other schemes

Mohamed Al-Lawatia, Robert C. Sharpley, Hong Wang

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We develop two characteristic methods for the solution of the linear advection diffusion equations which use a second order Runge-Kutta approximation of the characteristics within the framework of the Eulerian-Lagrangian localized adjoint method. These methods naturally incorporate all three types of boundary conditions in their formulations, are fully mass conservative, and generate regularly structured systems which are symmetric and positive definite for most combinations of the boundary conditions. Extensive numerical experiments are presented which compare the performance of these two Runge-Kutta methods to many other well perceived and widely used methods which include many Galerkin methods and high resolution methods from fluid dynamics.

Original languageEnglish
Pages (from-to)741-768
Number of pages28
JournalAdvances in Water Resources
Volume22
Issue number7
DOIs
Publication statusPublished - Apr 30 1999

Keywords

  • Characteristics methods
  • Comparison of numerical methods
  • Eulerian-Lagranigan methods
  • Numerical solutions of advection-diffusion equations
  • Runge-Kutta methods

ASJC Scopus subject areas

  • Earth-Surface Processes

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