When structure makes a difference: Computation of rotating wall-bounded flows with an algebraic structure-based model
Ημερομηνία
2005Εκδότης
Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, CyprusAffiliation: Center for Turbulence Research, Stanford University, Stanford, CA 94305, United States
Correspondence Address: Kassinos, S.C.
Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, Cyprus
email: kassinos@ucy.ac.cy
Source
4th International Symposium on Turbulence and Shear Flow PhenomenaVolume
1Pages
253-258Google Scholar check
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Metadata
Εμφάνιση πλήρους εγγραφήςΕπιτομή
Two linear eddy-viscosity models, the ν 2-f and κ-ω models, have been combined with an algebraic structure-based algorithm for the evaluation of the Reynolds stresses. This closure was originally designed as an integral part of the algebraic structure-based model (ASBM) to capture the turbulent anisotropy occurring in rotating wall bounded flows. It is shown that the algebraic structure-based evaluation of the Reynolds stresses can be used directly with conventional turbulence models sensitizing them to rotation. Significant improvement in the prediction of anisotropic turbulent flow can be achieved without an additional tuning of the closure coefficients. The models are evaluated in spanwise rotating channel flow and in flat plate boundary layers. The sensitivity to the Reynolds and rotation numbers is investigated. The results are compared with DNS data.