Flow through a curved duct using nonlinear two-equation turbulence models

Fotis Sotiropoulos, Yiannis Ventikos

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


Standard isotropic and nonlinear two-equation turbulence closures are employed to calculate the flow through a 90-deg rectangular duct. The models used include the two-layer k-ε model, the k-ω model, and two nonlinear variants of the k-ω model based on quadratic and cubic constitutive relations, respectively. Comparisons of the computed results with the measurements show that the cubic nonlinear k-ω closure is the only model that successfully reproduces most of the experimentally observed features of both the mean flow and turbulence fields. This work demonstrates, for the first time, that near-wall, nonisotropic, two-equation models offer a promising alternative to Reynolds-stress transport closures for developing practical computational fluid dynamics methods able to predict complex shear flows of engineering interest.

Original languageEnglish (US)
Pages (from-to)1256-1262
Number of pages7
JournalAIAA journal
Issue number7
StatePublished - Jul 1998


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