Characteristic boundary conditions for direct simulations of turbulent counterflow flames

C. S. Yoo, Y. Wang, A. Trouvé, Hong Im*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

148 Scopus citations

Abstract

Improved Navier-Stokes characteristic boundary conditions (NSCBC) are formulated for the direct numerical simulations (DNS) of laminar and turbulent counterflow flame configurations with a compressible flow formulation. The new boundary scheme properly accounts for multi-dimensional flow effects and provides nonreflecting inflow and outflow conditions that maintain the mean imposed velocity and pressure, while substantially eliminating spurious acoustic wave reflections. Applications to various counterflow configurations demonstrate that the proposed boundary conditions yield accurate and robust solutions over a wide range of flow and scalar variables, allowing high fidelity in detailed numerical studies of turbulent counterflow flames.

Original languageEnglish (US)
Pages (from-to)617-646
Number of pages30
JournalCombustion Theory and Modelling
Volume9
Issue number4
DOIs
StatePublished - Nov 1 2005

Keywords

  • Compressible reacting flows
  • Counterflow
  • Direct numerical simulation
  • LODI
  • Nonreflecting boundary conditions

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Modeling and Simulation
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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