Lagrangian simulations of unstable gravity-driven flow of fluids with variable density in randomly heterogeneous porous media

Research output: Contribution to journalArticlepeer-review

Abstract

A new Lagrangian particle model based on smoothed particle hydrodynamics (SPH) is developed and used to simulate Darcy scale flow and transport in porous media. The method has excellent conservation properties and treats advection exactly. The Lagrangian method is used in stochastic analysis of miscible density-driven fluid flows. Results show that heterogeneity significantly increases dispersion and slows development of Rayleigh-Taylor instability. The presented numerical examples illustrate the advantages of Lagrangian methods for stochastic transport simulations.

Original languageEnglish (US)
Pages (from-to)993-1002
Number of pages10
JournalStochastic Environmental Research and Risk Assessment
Volume24
Issue number7
DOIs
StatePublished - Oct 2010
Externally publishedYes

Keywords

  • Rayleigh-Taylor instability
  • Smoothed particle hydrodynamics
  • Uncertainty quantification

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Safety, Risk, Reliability and Quality
  • Water Science and Technology
  • Environmental Science(all)

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