First and second order error estimates for the upwind source at interface method

Theodoros Katsaounis*, Chiara Simeoni

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The Upwind Source at Interface (U.S.I.) method for hyperbolic conservation laws with source term introduced by Perthame and Simeoni is essentially first order accurate. Under appropriate hypotheses of consistency on the finite volume discretization of the source term, we prove Lp-error estimates, 1≤p<+∞, in the case of a uniform spatial mesh, for which an optimal result can be obtained. We thus conclude that the same convergence rates hold as for the corresponding homogeneous problem. To improve the numerical accuracy, we develop two different approaches of dealing with the source term and we discuss the question of deriving second order error estimates. Numerical evidence shows that those techniques produce high resolution schemes compatible with the U.S.I. method.

Original languageEnglish (US)
Pages (from-to)103-122
Number of pages20
Issue number249
StatePublished - Jan 2005
Externally publishedYes


  • Consistency
  • Error estimates
  • Finite volume schemes
  • Scalar conservation laws
  • Source terms
  • Upwind interfacial methods

ASJC Scopus subject areas

  • Algebra and Number Theory
  • Computational Mathematics
  • Applied Mathematics


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