LES and DES Investigations of Turbulent Flow over a Sphere at Re = 10,000

G. S. Constantinescu, Kyle Squires

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

The flow around a sphere at a reynolds number of 104 in the subcritical regime was investigated. The large eddy simulation (LES) using a dynamic Smagorinsky type subgrid stress (SGS) model and detached eddy simulation (DES) were applied. The dynamic eddy viscosity model is used in the LES. In the regime the boundary layers at separation were laminar and transition to turbulence that occurs farther downstream in the separated shear layers. The quantities such as the drag coefficient, wake frequencies, position of laminar separation on the sphere and the mean pressure and skin-friction distributions along the sphere were also predicted.

Original languageEnglish (US)
Pages (from-to)267-298
Number of pages32
JournalFlow, Turbulence and Combustion
Volume70
Issue number1-4
DOIs
StatePublished - 2003

Fingerprint

Large eddy simulation
large eddy simulation
turbulent flow
Turbulent flow
vortices
eddy viscosity
skin friction
drag coefficients
simulation
Skin friction
Drag coefficient
shear layers
wakes
boundary layers
Reynolds number
Boundary layers
Turbulence
turbulence
Viscosity

Keywords

  • Computational fluid dynamics
  • Detached eddy simulation
  • Large eddy simulation
  • Massively separated flows
  • Subgrid scale models
  • Wakes

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

Cite this

LES and DES Investigations of Turbulent Flow over a Sphere at Re = 10,000. / Constantinescu, G. S.; Squires, Kyle.

In: Flow, Turbulence and Combustion, Vol. 70, No. 1-4, 2003, p. 267-298.

Research output: Contribution to journalArticle

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