A high-order immersed interface method for simulating unsteady incompressible flows on irregular domains

Mark N. Linnick, Hermann F. Fasel

Research output: Contribution to journalArticlepeer-review

290 Scopus citations


Immersed boundary methods and immersed interface methods are becoming increasingly popular for the computation of unsteady flows around complex geometries using a Cartesian grid. While good results, both qualitative and quantitative, have been obtained, most of the methods rely on low-order corrections to account for the immersed boundary. The objective of the present work is to present, as an alternative, a high-order modified immersed interface method for the 2D, unsteady, incompressible Navier-Stokes equations in stream function-vorticity formulation. The method employs an explicit fourth-order Runge-Kutta time integration scheme, fourth-order compact finite-differences for computation of spatial derivatives, and a nine-point, fourth-order compact discretization of the Poisson equation for computation of the stream function. Corrections to the finite difference schemes are used to maintain high formal accuracy at the immersed boundary, as confirmed by analytical tests. To validate the method in its application to incompressible flows, several physically relevant test cases are computed, including uniform flow past a circular cylinder and Tollmien - Schlichting waves in a boundary layer.

Original languageEnglish (US)
Pages (from-to)157-192
Number of pages36
JournalJournal of Computational Physics
Issue number1
StatePublished - Mar 20 2005


  • Cartesian grid method
  • Finite difference methods
  • Immersed boundary
  • Immersed interface
  • Incompressible viscous fluids

ASJC Scopus subject areas

  • Numerical Analysis
  • Modeling and Simulation
  • Physics and Astronomy (miscellaneous)
  • General Physics and Astronomy
  • Computer Science Applications
  • Computational Mathematics
  • Applied Mathematics


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