A moving Lagrangian interface technique for flow computations over fixed meshes

Marcela Cruchaga*, Diego Celentano, Tayfun Tezduyar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


In this paper, an enhanced finite element formulation for unsteady incompressible flows with moving interfaces is presented. The weak form of the Navier-Stokes equations, written using a generalized streamline operator technique, is coupled with the movement of the interface between two immiscible fluids defined through an independent moving mesh. The position of the interface is updated using a Lagrangian formulation. In this framework, a global mass conservation corrector algorithm and an enhanced element integration technique are proposed to improve accuracy. The method is applied to a number of test problems with moving interfaces.

Original languageEnglish
Pages (from-to)525-543
Number of pages19
JournalComputer Methods in Applied Mechanics and Engineering
Issue number6-7
Publication statusPublished - 2001 Dec 7
Externally publishedYes


  • Fixed mesh
  • Incompressible flow
  • Moving interface

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Computer Science Applications


Dive into the research topics of 'A moving Lagrangian interface technique for flow computations over fixed meshes'. Together they form a unique fingerprint.

Cite this