IFISS: a computational laboratory for investigating incompressible flow problems

Howard Elman, Alison Ramage, D.J. Silvester

Research output: Working paper


The IFISS Incompressible Flow & Iterative Solver Software package contains software which can be run with MATLAB or Octave to create a computational laboratory for the interactive numerical study of incompressible flow problems. It includes algorithms for discretization by mixed finite element methods and a posteriori error estimation of the computed solutions, together with state-of-the-art preconditioned iterative solvers for the resulting discrete linear equation systems. In this paper we give a flavour of the code's main features and illustrate its applicability using several case studies. We aim to show that IFISS can be a valuable tool in both teaching and research.
Original languageEnglish
Publication statusPublished - 13 Sept 2012


  • ifiss
  • computational laboratory
  • incompressible flow
  • problems
  • investigation
  • finite elements
  • mathematical software
  • iterative solvers


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