Spectral element-RNG simulations of turbulent flows in complex geometries

G. Karniadakis, S. Orszag, V. Yakhot, A. Yakhot, S. Rakib

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Renormalization Group Theory (RNG) modeling techniques are combined with spectral element discretization procedures to formulate an algorithm appropriate for simulating high Reynolds number turbulent flows in complex geometries. Three different approaches of modeling are followed based on RNG algebraic, differential K-epsilon, and subgrid-scale models for the turbulent viscosity. Results obtained for the fully developed channel flow, and for the separated flow over a backwards-facing step suggest that all three formulations are suitable for turbulent flow simulations.
Original languageEnglish GB
Title of host publicationIN: Symposium on Turbulent Shear Flows, 7th, Stanford, CA, Aug. 21-23, 1989, Proceedings
Volume1
StatePublished - 1989

Publication series

NameIN: Symposium on Turbulent Shear Flows, 7th, Stanford, CA, Aug. 21-23, 1989, Proceedings

Keywords

  • Backward Facing Steps
  • Channel Flow
  • Flow Geometry
  • Group Theory
  • K-Epsilon Turbulence Model
  • Turbulent Flow
  • Algorithms
  • Degrees Of Freedom
  • Fine Structure
  • Grid Generation (Mathematics)
  • High Reynolds Number

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