Front Tracking and Operator Splitting for
Nonlinear Partial Differential Equations



This page aims at reporting some of the activity within conservation laws and related areas at the University of Bergen (UiB), the University of Oslo (UiO) and the Norwegian University of Science and Technology (NTNU) up to around 1999. Some of the links lead to nice web-pages or mpeg-movies, and some only lead to PostScript files of papers describing the topic. See also the list of relevant publications. The activity involves the following active researchers.


Disclaimer: These pages have not been updated since August 1999 and thus do not completely represent current state. For more information on this activity, see the following web-pages: publications of Kenneth Hvistendahl Karlsen and Knut-Andreas Lie, or Nonlinear PDEs of evolution type - theory and numerics


Hyperbolic Conservation Laws

Scalar equations in one dimension:
   Front tracking and how to implement it.
   Initial value problems
   Initial-boundary value problems
   Variable coefficients
   Discontinuous flux functions
Scalar equations in several dimensions:
   Dimensional splitting
   Grid refinement (with a demonstration)
   Variable coefficients
   Initial-boundary value problems
Systems in one dimension:
   Front tracking
   The Euler equations
   Shallow water equations
Systems in several dimensions:
   The Euler equations
   The polymer system
   Shallow water equations

Convection-Diffusion Problems

Scalar equations in one dimension:
   Operator splitting -- a numerical study
   Corrected operator splitting
   Equations with variable coefficients
   Degenerate problems
Scalar equations in several dimensions
   Operator splitting
   Corrected operator splitting
   Degenerate problems ( a movie)

Various Applications

One dimension
   Estimation of fractional flow functions
   Gas flow in pipelines with kinks
   Generalized Korteweg-de Vries equations
   Glacier model (see Ex. 4)
   Polymer flow with gravitation
   Sedimentation of flocculated suspensions
Two dimensions
   Gas dynamics
   Dambreak problem
   Two-phase flow with capillary forces
   Two-phase multi-component flow in oil reservoirs
   Water waves generated by a bottom topography

- HTML document,   - PostScript document,   - compressed PostScript document,   - MPEG movie.




Knut-Andreas Lie <andreas@math.ntnu.no>
Last modified: December 2001