Browsing by Author "Kassinos, Stavros C."
Now showing items 1-20 of 107
-
Article
Advances in particle representation modeling of homogeneous turbulence. From the linear PRM version to the interacting viscoelastic IPRM
Kassinos, Stavros C.; Akylas, Evaggelos (2012)In simple flows with mild mean deformation rates the Reynolds stresses are determined by the strain rate. On the other hand, when the mean deformation is very rapid, the turbulent structure takes some time to respond and ...
-
Article
Analytic models of heterogenous magnetic fields for liquid metal flow simulations
Votyakov, E. V.; Kassinos, Stavros C.; Albets-Chico, X. (2009)A physically consistent approach is considered for defining an external magnetic field as needed in computational fluid dynamics problems involving magnetohydrodynamics (MHD). The approach results in simple analytical ...
-
Article
An analytical solution for rapidly distorted turbulent shear flow in a rotating frame
Akylas, Evaggelos; Kassinos, Stavros C.; Langer, A. C. (2006)In this study we apply rapid distortion theory to the case of nonstratified homogeneous turbulence that is sheared in a frame that counter-rotates at a rate that matches in magnitude the rotation associated with the mean ...
-
Article
Analyzing a turbulent pipe flow via the one-point structure tensors: Vorticity crawlers and streak shadows
Stylianou, F. S.; Pecnik, R.; Kassinos, Stavros C. (2016)Efforts to identify and visualize near-wall structures typically focus on the region y+≳5, where large-scale structures with significant turbulent kinetic energy content reside, such as the high-speed and low-speed streaks ...
-
Book Chapter
Application of a New Algebraic Structure-Based Model to Rotating Turbulent Flows
Langer, C. A.; Kassinos, Stavros C.; Haire, S. L. (Elsevier, 2005)This chapter discusses application of a new algebraic structure-based model to rotating turbulent flows. A primary goal of Reynolds averaged Navier-Stokes (RANS-based modeling is to determine the Reynolds stress tensor in ...
-
Article
ASBM-BSL: 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
The ASBM-SA turbulence closure: Taking advantage of structure-based modeling in current engineering CFD codes
Panagiotou, C. F.; Kassinos, Stavros C.; Aupoix, B. (2015)Structure-based turbulence models (SBM) carry information about the turbulence structure that is needed for the prediction of complex non-equilibrium flows. SBM have been successfully used to predict a number of canonical ...
-
Article
Assessing the accuracy of wall concentration estimation based on averaged permeate velocity in spacer-filled Reverse Osmosis (RO) membrane systems
Ma, S.; Kassinos, Stavros C.; Fatta-Kassinos, Despo (2006)The accuracy of estimations of wall concentration using the constant (averaged) permeate velocity method was assessed in both empty and spacer-filled reverse osmosis (RO) channels under various operation conditions, based ...
-
Article
Assessing the accuracy of wall concentration estimation based on averaged permeate velocity in spacer-filled Reverse Osmosis (RO) membrane systems
Ma, S.; Kassinos, Stavros C.; Fatta-Kassinos, Despo (2006)The accuracy of estimations of wall concentration using the constant (averaged) permeate velocity method was assessed in both empty and spacer-filled reverse osmosis (RO) channels under various operation conditions, based ...
-
Article
Assessing the impact of concentration-dependent fluid properties on concentration polarization in crossflow membrane systems
Ma, S.; Kassinos, Stavros C.; Fatta-Kassinos, Despo (2008)
-
Article
Assessing the impact of concentration-dependent fluid properties on concentration polarization in crossflow membrane systems
Ma, S.; Kassinos, Stavros C.; Fatta-Kassinos, Despo (2008)
-
Conference Object
CFD analysis of turbulent particle deposition in the lungs
Radhakrishnan, H.; Kassinos, Stavros C. (Affiliation: UCY-CompSci Computational Sciences Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, CyprusCorrespondence Address: Radhakrishnan, H.UCY-CompSci Computational Sciences Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus, 2009)
-
Conference Object
CFD modeling of turbulent flow and particle deposition in human lungs
Radhakrishnan, H.; Kassinos, Stavros C. (Affiliation: UCY-CompSci Computational Sciences Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, CyprusCorrespondence Address: Radhakrishnan, H.UCY-CompSci Computational Sciences Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprusemail: hariradh@ucy.ac.cy, 2009)Understanding transport and deposition of inhaled particles in the human airways plays a crucial role in the targeted therapy of pulmonary diseases, and the administration of inhaled medicines. Numerous researchers have ...
-
Conference Object
Classification of Inhaled Medicines: Development of an Inhalation-based Biopharmaceutical Classification System
Hastedt, Jayne E.; Bäckman, Per; Cabal, Antonio; Clark, Andy; Ehrhardt, Carsten; Forbes, Ben; Hickey, Anthony J.; Hochhaus, Guenther; Jiang, Wenlei; Kassinos, Stavros C.; Kuehl, Philip; Prime, David; Son, Yoen-Ju; Stippler, Erika; Teague, Simon; Tehler, Ulrika; Wylie, Jen (Aerosol Society, UK, 2019)
-
Book
Complex effects in Large Eddy Simulations
Kassinos, Stavros C. (Springer, 2007)
-
Article
Complex effects in Large Eddy Simulations
Kassinos, Stavros C.; Langer, C. A.; Iaccarino, G.; Moin, P. (2007)
-
Article
Computation of complex terrain turbulent flows using hybrid algebraic structure-based models (ASBM) and LES
Panagiotou, C.; Kassinos, Stavros C.; Grigoriadis, D. G. E. (2016)In this work, we revisit the coupling of the Algebraic Structure-Based Model with popular two-equation eddy viscosity models (EVM). We consider both the v2 − f model and variants of the κ-ω model. Our aim is to explore the ...
-
Conference Object
Computational fluid dynamics (CFD) Simulations of aerosol deposition in the lungs
Koullapis, P. G.; Kassinos, Stavros C.; Lin, C.-L. (TSFP-9, 2015)In the current study, Large Eddy Simulations (LES) are used to investigate the transport and deposition of inhaled aerosol particles (dp = 0.1, 0.5, 1, 2.5, 5, 10 μm) in a realistic geometry of the human airways under ...
-
Article
A consistent velocity approximation for variable-density flow and transport in porous media
Albets-Chico, X.; Kassinos, Stavros C. (2013)Using a finite-volume nodal-based code, we introduce a new consistent numerical scheme for approximating the seepage velocity in variable-density flow in porous media. It has been known from previous works that the lack ...
-
Article
The contribution of active and inactive structures to the statistics of a turbulent pipe flow
Stylianou, F. S.; Kassinos, Stavros C. (2017)The current study is a short follow-up to our most recent work (Stylianou et al., 2016), where among other things we have presented an effective criterion suitable for distinguishing large-scale coherent structures with ...