Arbitrary lagrangian-eulerian approach for finite element modeling of two-dimensional turbidity currents

Sung Uk Choi, Marcelo H. Garcia

Research output: Contribution to journalArticle

Abstract

A finite element numerical model is proposed for the simulation of two-dimensional turbidity currents. Time-dependent, layer-averaged governing equations—a hyperbolic system of partial differential equations—are chosen for the numerical analysis. The Arbitrary Lagrangian-Eulerian description is introduced to provide a computational framework for the moving boundary problem. A dissipative-Galerkin formulation is used for the spatial discretization, and a second-order finite difference scheme is used for the time integration. A deforming-grid generation technique is employed to cope with the moving boundary of a propagating front. In order to estimate the bed elevation change by the turbidity current, the double-grid finite element technique is used. The developed numerical algorithm is applied to the simulation of a laboratory experiment.

Original languageEnglish (US)
Pages (from-to)175-182
Number of pages8
JournalWater International
Volume21
Issue number3
DOIs
StatePublished - Sep 1996

ASJC Scopus subject areas

  • Water Science and Technology
  • Management, Monitoring, Policy and Law

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