Computational validation of new Reynolds stress closure for nonequilibrium effects in turbulent flows

Peter E. Hamlington, Werner Dahm

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

The computational formulation of a new nonequilibrium Reynolds stress closure is presented along with preliminary validation results for both homogeneous and inhomogeneous turbulent flow problems of practical engineering importance. The new nonequilibrium closure, which has been rigorously derived elsewhere,1replaces the classical Boussinesq hypothesis appearing in many current two-equation turbulence models with a comparably simple representation for the Reynolds stresses, thereby allowing straightforward implementation in existing computational frameworks. The new nonequilibrium closure has been extended to include a rigorously derived realizable eddy viscosity, and theoretical details of the closure are evaluated through fundamental tests of periodically and impulsively sheared homogeneous turbulence. The full computational formulation of the nonequilibrium closure is outlined for both k-ω and k-ω model frameworks. Finally, preliminary inhomogeneous flow results are presented using the k-ω framework for turbulent flow over a flat-plate and the interaction of an impinging oblique shock wave with a turbulent boundary layer.

Original languageEnglish (US)
Title of host publication47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
StatePublished - 2009
Externally publishedYes
Event47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: Jan 5 2009Jan 8 2009

Other

Other47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityOrlando, FL
Period1/5/091/8/09

Fingerprint

Reynolds stress
turbulent flow
Turbulent flow
closures
Turbulence models
Shock waves
Boundary layers
Turbulence
Viscosity
turbulence
oblique shock waves
formulations
homogeneous turbulence
eddy viscosity
turbulent boundary layer
turbulence models
flat plates
shock wave
eddy
viscosity

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Hamlington, P. E., & Dahm, W. (2009). Computational validation of new Reynolds stress closure for nonequilibrium effects in turbulent flows. In 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition [2009-1323]

Computational validation of new Reynolds stress closure for nonequilibrium effects in turbulent flows. / Hamlington, Peter E.; Dahm, Werner.

47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009. 2009-1323.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hamlington, PE & Dahm, W 2009, Computational validation of new Reynolds stress closure for nonequilibrium effects in turbulent flows. in 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition., 2009-1323, 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, Orlando, FL, United States, 1/5/09.
Hamlington PE, Dahm W. Computational validation of new Reynolds stress closure for nonequilibrium effects in turbulent flows. In 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009. 2009-1323
Hamlington, Peter E. ; Dahm, Werner. / Computational validation of new Reynolds stress closure for nonequilibrium effects in turbulent flows. 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009.
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