Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Author "Langer, C. A."
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Book Chapter
Application of a New Algebraic StructureBased Model to Rotating Turbulent Flows
Langer, C. A.; Kassinos, Stavros C.; Haire, S. L. (Elsevier, 2005)This chapter discusses application of a new algebraic structurebased model to rotating turbulent flows. A primary goal of Reynolds averaged NavierStokes (RANSbased modeling is to determine the Reynolds stress tensor in ...

Article
ASBMBSL: An easy access to the structure based model technology
Aupoix, B.; Kassinos, Stavros C.; Langer, C. A. (2011)The Algebraic Structure Based Model (ASBM) offers unique features to represent the Reynolds stress tensor from the underlying turbulent structures. It is usually coupled with a non standard length scale equation. A way of ...

Article
Complex effects in Large Eddy Simulations
Kassinos, Stavros C.; Langer, C. A.; Iaccarino, G.; Moin, P. (2007)

Article
Diagnostic properties of structure tensors in turbulent flows
Grigoriadis, D. G. E.; Langer, C. A.; Kassinos, Stavros C. (2010)The behavior of turbulence structure tensors based on LargeEddy Simulations (LES) in a wide range of turbulent channel flows is presented. The structure tensors provide significant physical information on the character ...

Article
Linear analysis of generalized turbulent hyperbolic flow in a rotating frame
Langer, C. A.; Akylas, Evaggelos; Kassinos, Stavros C. (2007)We apply inviscid rapid distortion theory to the generalized case of turbulent hyperbolic flow in a rotating frame and investigate the dependence of the evolution of the turbulent kinetic energy on the frame rotation rate. ...

Article
On the linear stability of turbulent plane strain flow in a rotating frame
Akylas, Evaggelos; Langer, C. A.; Kassinos, Stavros C.; Demosthenous, E. (2007)We apply inviscid rapid distortion theory to the limiting hyperbolic case of turbulent plain strain flow in a rotating frame and investigate the dependence of the evolution of the turbulent kinetic energy on the frame ...

Article
Preface
Kassinos, Stavros C.; Langer, C. A.; Iaccarino, G.; Moin, P. (2007)

Article
Rapid shear of initially anisotropic turbulence in a rotating frame?
Akylas, Evaggelos; Kassinos, Stavros C.; Langer, C. A. (2007)In the present study, we investigate, using inviscid rapid distortion theory, the evolution of sheared turbulence in a rotating frame as a function of the rotation rate (including stable, transitional, and unstable regimes), ...

Article
Rapidly sheared homogeneous stratified turbulence in a rotating frame
Kassinos, Stavros C.; Akylas, Evaggelos; Langer, C. A. (2007)Rapid distortion theory is applied to stratified homogeneous turbulence that is sheared in a rotating frame. Insight into the stabilizing and destabilizing effects of the combined stratification and frame rotation is gained ...

Article
A simplified structurebased model using standard turbulence scale equations: computation of rotating wallbounded flows
Kassinos, Stavros C.; Langer, C. A.; Kalitzin, G.; Iaccarino, G. (2006)Two linear eddyviscosity models, the v2f and kω models, have been combined with an algebraic structurebased algorithm for the evaluation of the Reynolds stresses. This closure was originally designed as an integral ...

Article
Structure and scales in turbulence modeling
Reynolds, W. C.; Langer, C. A.; Kassinos, Stavros C. (2002)The enstrophy of the largescale energycontaining turbulence is proposed as the second turbulence scale for use, in conjunction with the turbulence energy, in twoscale onepoint engineering turbulence models. Its transport ...

Article
Structurebased turbulence model: Application to a rotating pipe flow
Poroseva, S. V.; Kassinos, Stavros C.; Langer, C. A.; Reynolds, W. C. (2002)A new approach for modeling the onepoint turbulence statistics, which takes into account the information on turbulence structure, has been suggested in Kassinos and Reynolds (Report TF61, Thermosciences Division, Department ...

Article
Structurebased turbulence modeling for wallbounded flows
Kassinos, Stavros C.; Langer, C. A.; Haire, S. L.; Reynolds, W. C. (2000)The performance of Reynolds stress transport (RST) models in nonequilibrium flows is limited by the lack of information about two dynamically important effects: The role of energycontaining turbulence structure ...

Conference Object
When structure makes a difference: Computation of rotating wallbounded flows with an algebraic structurebased model
Kassinos, Stavros C.; Langer, C. A.; Kalitzin, G.; Iaccarino, G. (Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, CyprusAffiliation: Center for Turbulence Research, Stanford University, Stanford, CA 94305, United StatesCorrespondence Address: Kassinos, S.C.Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, Cyprusemail: kassinos@ucy.ac.cy, 2005)Two linear eddyviscosity models, the ν 2f and κω models, have been combined with an algebraic structurebased algorithm for the evaluation of the Reynolds stresses. This closure was originally designed as an integral ...